Episodes

December 14, 2022

In our third annual Mystery Sound Game Show, the crew from Endless Thread compete to guess the most sounds from this year’s batch. Get ready to listen along and test your knowledge of classic sci-fi movies, strange animal calls, video game themes, UI sounds, and more. One thing is certain: It’s gonn...

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December 7, 2022

Update: Jessie Unmasked

After months of speculation, the person behind TikTok’s current text-to-speech voice reveals her true identity. This is an update to episode #155, TikTalk. Follow the show on Twitter, Facebook, & Reddit. Subscribe to our Youtube channel. Sign up for Twenty Thousand Hertz+ to get our entire catalog ...

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November 16, 2022

Synth War II: Digital Doom

In the 1960s, Bob Moog and Don Buchla built synthesizers that changed the world. But by the early 80s, they faced a new challenger who threatened to bring it all crumbling down: the digital synthesizer. To defeat this opponent, they’d have to recruit a new ally… and maybe even join forces. Featuring...

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November 2, 2022

In the United States, the East Coast and West Coast have rivalries across food, sports, music and more. But there’s another rivalry that’s less well known, but just as important. This standoff created sounds that were unlike anything that had been heard before. It redefined what a musical instrument...

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October 19, 2022

A Thousand Words

Audio description allows you to enjoy a movie or TV show without the need for any visuals. But how do these narrators strike the right tone for a scene? How do the writers decide what needs to be described? And what’s in store for the future of described audio? In honor of Blindness Awareness Month,...

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October 5, 2022

The Booj Strikes Back

In the 80s and 90s, movie trailers were ruled by “voice-of-God” narrators who used stock phrases like, “In a world…” Today, movie studios have a different trick up their sleeves: epic sound design. In this episode, Professor James Deaville explains the history of trailers, and Youtuber Craven Moorha...

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September 21, 2022

In the late 80s and early 90s, 900 numbers were all the rage. For a couple bucks a minute, you could call and hear from Hulk Hogan and Freddy Kreuger, have a psychic predict your future, and even find true love. In this episode, we dig into the wild world of 900 numbers, and explore why they came ab...

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September 7, 2022

In World War II, the Japanese military operated a propaganda station called Radio Tokyo. Along with jazz music, the station featured several English-speaking female announcers, who became collectively known as Tokyo Rose. But who was Tokyo Rose? And was she really the treacherous villain that the US...

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August 24, 2022

In 2018, voiceover artist Bev Standing recorded 10,000 sentences for the Chinese Institute of Acoustics. Bev was told the recordings would be used for a translation app, but three years later, she was shocked to discover that she had become the default voice of TikTok in North America. On TikTok, Be...

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August 10, 2022

Ted Lasso's Dark Forest

Ted Lasso is about more than just an incompetent soccer coach—it’s about overcoming challenges by working together. And that’s exactly what the show’s sound team had to do when the pandemic hit just two episodes in. From creating crowds of thousands using just a few voices, to recording actors in th...

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July 27, 2022

Handbook for Sonic Happiness

We spend a lot of time curating for taste, touch, smell, and vision. But too often, sound gets overlooked. We forget that we can get rid of sounds that annoy us, and surround ourselves with sounds that we love. When we do, it can have huge benefits for our mood and wellbeing. In this episode, Dr. La...

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July 13, 2022

Shock Horror (A)

There’s a certain musical phrase that you’ve probably heard hundreds of times. It’s used to emphasize dramatic moments in movies, cartoons, commercials and musicals, most often as a gag. But while this little melody is everywhere today, the question is: Where did it come from? In this episode, we in...

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July 6, 2022

What does a sound designer do all day? How do noise canceling headphones really work? And why do modern movie trailers all sound the same? In this follow-up to our 150th episode, Dallas shares the secrets of sound design with Jordan Harbinger. They also discuss audio deepfakes, sonic branding, and t...

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June 29, 2022

Introducing MicroHertz

We’re thrilled to announce the launch of MicroHertz, a brand new bonus series available exclusively to our premium subscribers. MicroHertz will feature mini stories, Q&As, sound news, and much more. The first episode is available now. In it, Dallas gives a behind-the-scenes breakdown of making episo...

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June 22, 2022

What if you woke up one day, and found that you could no longer do the thing that gave you the most joy in your life? The thing that gave you purpose? The thing that defined your past, and was supposed to define your future? For our 150th episode, Dallas tells the personal story of how he lost somet...

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June 8, 2022

Relearning Boléro

In the same way that optical illusions can trick our eyes, auditory illusions can trick our ears. This raises a serious question: what is hearing, and how much of it is actually made up by our brains? In this story from the Unexplainable podcast, we explore how our brains create the sonic world arou...

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May 25, 2022

Ghosts in the (Hit) Machine

Many of today’s biggest songs are written and produced by people whose names don’t appear anywhere in the credits. They’re called ghostwriters and ghost producers, and they’re a huge part of the music industry. So what’s it like to watch your song become a hit when you can’t legally talk about it? A...

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May 11, 2022

Windows_Logon.wav

Part 2 of our series on the Windows startup sounds picks up when Microsoft made the radical decision to kill the startup sound in Windows 8. In this episode, we explore the forces that led to that decision, unpack how Microsoft channeled the music of language into their new UI sounds, and reveal 2 s...

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April 27, 2022

Ta-da! It’s Windows

Over the years, Microsoft has made at least ten iconic startup sounds for Windows—from the triumphant “Ta-da!” of Windows 3.1, to the ambient chime that Brian Eno crafted for Windows 95, to the orchestral sweep of Windows XP. In this episode, we explore the creation of the classic Windows startup so...

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April 13, 2022

For nearly half a century, one eerie sound has been showing up again and again in movies and TV shows. It’s typically used when something spooky or mysterious happens—and it can be heard in Poltergeist, The Matrix, Let the Right One In, and countless episodes of Unsolved Mysteries. So where did this...

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March 30, 2022

The voices of subway and train announcements are deeply ingrained in peoples’ lives. Many of us hear them every day, for years on end. And yet, hardly anyone knows who those voices belong to. In this episode, we uncover the human stories behind two of the most iconic transit systems in the world: th...

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March 16, 2022

Hidden Hitmakers

The names of pop and rock stars are known by millions of people around the world, but the people who actually write their music often stay in the shadows. In this episode, we peel back the curtain on the songwriters behind some of the biggest hits of the last forty years, and find out how this unsee...

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March 2, 2022

Happy Little Episode

In the forty years since The Joy of Painting first started airing, Bob Ross has become a cultural icon. His gentle, soothing voice is instantly recognizable, and still gives comfort to millions of people around the world. But despite his unshakably cheery demeanor, Bob’s life wasn’t always easy. Thi...

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February 16, 2022

In the 1960s, the BBC had a vise grip on British radio, and rarely played the pop and rock music that was all the rage. So a group of rebellious radio DJs decided to give the people what they wanted, and started broadcasting popular music from boats stationed in international waters. Soon enough, th...

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February 2, 2022

Being Dallas Taylor

Your name is so much more than the sound that people call you by. It’s an entire human identity, distilled into a few syllables. So what do six people who share the exact same name have in common? It turns out, much more than you might expect. Follow Dallas down the rabbit hole as he speaks to name ...

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January 19, 2022

When The Sims was first being developed, the creators faced a problem. They knew they wanted these characters to talk and interact, but they were worried that using a real language would quickly get repetitive and annoying. So, they decided to make one up. This is the story of Simlish: How it was cr...

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January 7, 2022

Welcome to Twenty Thousand Hertz

A lovingly crafted podcast that reveals the stories behind the world's most recognizable and interesting sounds. Subscribe now. Learn more about your ad choices. Visit megaphone.fm/adchoices

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December 15, 2021

For our second annual Mystery Sound competition, we’ve rounded up the 20 best sounds from the past year, and invited the hosts of Underunderstood to test their ears in a competitive guessing game. So bust out those Q-tips, turn up your headphones, and prepare to guess along as we find out who will b...

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December 1, 2021

In part 2 of our series on HBO, we explore the tough questions that the company faced in the digital era: Are people still willing to sit through a 90-second theme song before they watch a movie? Does the sound of analog TV static even make sense to younger viewers? Could the company change with the...

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November 17, 2021

It's Not TV. It's HBO.

In the 1980s, every movie that aired on HBO began with a truly epic theme song—a sweeping orchestral piece that triggers instant nostalgia for anyone who grew up with it. Then in the 90s, HBO introduced a 5-second audio logo for their original content. Today, we associate that sound with some of the...

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November 10, 2021

Zzzzzzzzzzzrr...

If you’re a human being, chances are, you know someone who is a big time snorer. You're falling asleep to the gentle sounds of crickets, and then BAM, you hear a snore that sounds like an angry troll. So who was the first snorer? And why is snoring still so popular after all these years? This story,...

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October 27, 2021

Creature Speakers

To give voices to the frightening monsters in movies, TV shows, and video games, sound designers often start with animal noises, then apply all kinds of creative processing. But other times, these sounds begin with human voice actors, who absolutely shred their vocal cords for our entertainment. In ...

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October 13, 2021

Video(less) Games

In the past, video games were largely inaccessible to people with visual impairments. But these days, game makers are adding all kinds of innovative options to make their games more accessible. And some developers are creating entire virtual worlds using nothing but sound. Featuring streamer & game ...

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September 29, 2021

Playing a sport without sight might sound impossible. But it turns out, there are blind athletes all around the world doing exactly that. Instead of using their eyes, these players rely on their ears to hit a pitch, block a throw, and charge across a crowded field. Featuring beep baseball player Eth...

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September 15, 2021

Listening to the Movies

When Matthew Shifrin was growing up, his blindness meant that trying to enjoy a movie or TV show was often a confusing and frustrating experience. But then, Matthew discovered something called video description—an extra audio track where a narrator describes the action on screen. And suddenly, every...

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September 1, 2021

For over a century, humans have been using technology to shape our sonic environment. White noise machines, nature recordings, noise canceling headphones and high-tech hearables all allow us to create an auditory safe space we can escape into. But is it possible to have too much control over what yo...

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August 18, 2021

Domestic Symphony

Not long ago, our home appliances made nothing but abrasive beeps and harsh buzzes. In recent years though, these devices have started to chirp and sing with carefully designed tones and melodies. But crafting the "perfect" device sound takes skill, patience, and a lot of trial and error. Featuring ...

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August 4, 2021

The Windsor Hum

In 2011, residents of Windsor, Ontario started experiencing a strange rumbling hum that rattled dishes and kept people awake at night. Then, after years of getting nowhere, the mystery of the Windsor Hum was finally solved... Or was it? This is a totally remixed, revoiced, and updated version of one...

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July 21, 2021

Since World War I, countries around the world have been broadcasting mysterious numerical messages via shortwave radio. Though concrete evidence is hard to come by, the general consensus is that these coded messages are meant for undercover agents operating abroad. And one particular Russian station...

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July 7, 2021

Nearly a century after they first appeared, the Looney Tunes are back in an all-new series. To bring this iconic franchise into the present, the creators are looking to its past, taking it back to the look and feel of the 1940s. But filling the shoes of legendary voice actor Mel Blanc is easier said...

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June 23, 2021

Prop 'til You Drop

In part 2 of our exploration of Foley, the Warner Brothers Foley team takes us into the all-important prop room. Along the way, they demonstrate how they make the sounds for flapping birds, breaking bones, cracking ice, handling guns, and more. Featuring Foley Artists Alyson Moore and Chris Moriana,...

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June 9, 2021

When it comes to film sound, "Foley Artist" might be the most important job you've never heard of. These performers record custom, synchronized sound effects to create the sounds for characters' footsteps, movements, and much more. It's exhausting and delicate work, and when it's done right, the aud...

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May 26, 2021

The Leaky Pipeline

In the late 80s, a small French company found a way to pair analog film with pristine digital audio. But getting their system into theaters would involve a long legal battle, hiding out in a Vegas bathroom, and a last-ditch meeting with a famous director. Their struggle is part of a larger narrative...

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May 19, 2021

We live in a designed world, and alert tones are no exception. Every beep and ping that your phone or laptop makes probably went through multiple rounds of revisions and approvals. So what separates a good device sound from a bad one? This story comes from the Wireframe podcast, and features sound d...

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May 12, 2021

Progression Obsession

There are a few specific chord progressions that show up again and again in popular music. Across hundreds of hit songs, the same basic musical formulas have been used by artists ranging from Lynyrd Skynyrd to Lady Gaga, and from Bob Marley to Blink-182. So where did these musical tropes even come f...

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April 28, 2021

Since their founding almost a century ago, Shure has created some of the most iconic microphones ever made. In this episode, we worked with Shure to tell the story of the SM7 dynamic microphone: from its humble beginnings in voiceover studios in the early 70s, to its use on classic albums, to its re...

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April 14, 2021

Since its official release in 2011, Minecraft has grown from a small, experimental indie game into the best-selling video game of all time. Today, the game's haunting music and quirky sound effects are just as iconic as its blocky visuals. In this episode, composer and sound designer Daniel Rosenfel...

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March 24, 2021

20th Century Fox

The melodic fanfare that introduces every 20th Century Fox movie was first composed almost a hundred years ago. Since then, it's become one of the most enduring and recognizable pieces of music in modern history. It's survived company acquisitions, competition from television, and changing trends in...

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March 10, 2021

The Deterrent Tone

The Long-Range Acoustic Device, or LRAD, was developed for the military for long-range communication at sea. But this ear-splitting device has also been fired on protesters across America, resulting in lawsuits and permanent hearing loss. In this episode, we explore the history, science and effects ...

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February 24, 2021

Since its introduction in 2003, the McDonald’s “I’m Lovin’ It” jingle has become one of the most recognizable melodies in the world. This is the story of how a catchy five-note jingle conquered the planet, from its humble beginnings at a German ad agency, to being sung by globally famous pop stars. ...

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January 27, 2021

Sound 101 with Bill Nye

What is sound, on a fundamental level? How did animals evolve to hear? And what happens when you go faster than sound itself? In this episode, we explore the physics of sound with the legendary Bill Nye. Follow the show on Twitter, Facebook, & Reddit. Subscribe to our Youtube channel here. Become a...

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January 13, 2021

Synesthesia is a neurological condition where one sensory experience gets combined with another, meaning someone might hear sounds when they eat, or see colors when they listen to music. So what exactly is synesthesia? And what’s it like to go through life with these unique sensory connections? Feat...

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December 16, 2020

After composer Eric Whitacre finished Virtual Choir number 5 in 2018, he thought the project might be done for good. But 2020 was just around the corner, and the Virtual Choir was far from over. For our last episode of the year, we've re-edited and remixed our episode about the Virtual Choir, and ad...

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December 9, 2020

Sounds Worth Saving

Alan Lomax believed that the culture of poor Americans was important and worthy of saving. So he spent decades traveling the American South and recording obscure musicians on their front porches, in churches, even in prisons. Today, he's considered an American icon, but the road to becoming a legend...

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December 2, 2020

Sci-fi and fantasy creators often use constructed languages (or conlangs) to help us believe that the characters come from ancient times or distant galaxies. But what happens when a fictional language jumps off the screen and into the real world? This story comes from the Imaginary Worlds podcast. ...

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November 18, 2020

We've all heard the iconic recordings from the Apollo missions. But how exactly does NASA manage to run live audio between Earth and the moon? And how might we chat with astronauts on Mars and beyond? Featuring Astronaut Peggy Whitson, NASA Audio Engineer Alexandria Perryman, and Astrophysicist Paul...

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November 11, 2020

Technology has the power to transform the way our world sounds. It could even give us entirely new ways to experience our surroundings. In this episode, we explore the sounds of the future, and how can we use the tools we already have to build a better sounding world. Featuring Rose Eveleth, Creator...

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October 28, 2020

Sound and Silence

Sound surrounds us, even in the quietest moments. But depending on how we hear, the world can be a different auditory experience for each of us. This episode features four stories from the TED Radio Hour. Twenty Thousand Hertz is produced out of the studios of Defacto Sound and hosted by Dallas Tayl...

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October 21, 2020

For hundreds of years, composers have been using a specific four-note melody to evoke death. It's appeared in dozens of famous movies, and you probably never even realized it. But once you hear it, you'll start noticing it everywhere. Featuring musicologist Alex Ludwig and Strong Songs Host Kirk Ham...

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October 14, 2020

People with perfect or "absolute" pitch hear every single sound as precise musical notes. Is this extraordinary talent a blessing or a curse? In this episode, we dive into the neuroscience, pluses and pitfalls of absolute pitch. Featuring neuroscientist Daniel Levitin and Grammy-winning musician Jac...

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October 7, 2020

Tyrannosaurus FX

When you imagine the sound of a dinosaur, you probably think of a scene from the Jurassic Park movies. How do sound designers make these extinct creatures sound so believably alive? And what does modern paleontology tell us about what dinosaurs REALLY sounded like? Featuring Jurassic World sound des...

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September 30, 2020

In less than two years, Napster became a global sensation... and then record labels and multi-platinum artists brought it crashing down. But in its short lifespan, Napster transformed our ideas about how we consume music, and how much we're willing to pay for it. This story comes from the podcast Sp...

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September 16, 2020

Musicians like Justin Timberlake, Adele, Björk and Rod Stewart have all had surgery to treat vocal nodes. Nodes are so widely discussed, they've almost become a boogeyman in the singing community. But is this condition really as common as people fear? And when nodes do develop, is all hope truly los...

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September 2, 2020

Deepfake Dallas

Using artificial intelligence, someone can make an algorithm that sounds just like you. And then they can say... whatever they want you to say. We're entering a brand new era: One where you can no longer trust your ears. Welcome to the world of audio deepfakes. Featuring deepfake wizard Tim McSmythu...

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August 19, 2020

The City That Never Sleeps

When writer Paige Towers moved to one of the loudest cities in the world, she found herself overcome with anxiety and depression. She came to realize that the noise of the city itself, and the inability to escape from it, was making a huge impact on her mental health. With the help of the internet, ...

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August 5, 2020

Ta-dum! It's Netflix

The Netflix ta-dum sound has quickly become one of the most iconic sound logos of our generation. I bet you can hear it in your head right now. This sound is heard countless times, every single day, all over the world. But the Netflix sound was almost very different than the one we know today. Hear ...

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July 22, 2020

McElroys, Mysteries and Me

Join Dallas and the McElroy brothers (hosts of My Brother, My Brother and Me) as they compete to see which brother has the best ear. We dust off our old mystery sounds to test the McElroy's on their knowledge of pop culture, science, and the mundane. Which brother has the best ear? Find out, in this...

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July 8, 2020

Broadway’s award-winning, record-breaking, smash hit, Hamilton, is a musical unlike any other. In this special episode, we have re-voiced, remixed, and remastered one of our shows about our favorite broadway musical! Featuring Nevin Steinberg, Hamilton’s Tony-nominated sound designer, Benny Reiner, ...

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June 24, 2020

Stop... Collaborate & Listen

Can you steal from yourself? Can you copyright a mood? We look back on some important copyright cases that could have an impact on the entire future of music making. Featuring Adam Neely and Sandra Aistars. Twenty Thousand Hertz is produced out of the studios of Defacto Sound and hosted by Dallas T...

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June 10, 2020

Copyrights & Wrongs

Most western music is built on the same 12 notes. Sometimes the arrangement of those notes sounds similar, which raises the question: Theft or Inspiration? We listen to some famous copyright disputes and try to decode them. Featuring Adam Neely and Sandra Aistars. Twenty Thousand Hertz is produced ...

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May 27, 2020

Makin' Whoopee!

Farts have been funny to humans for thousands of years. This basic bodily function has countless nicknames around the world, but our fascination with farts is probably best illustrated by the simple whoopee cushion. In this episode from the podcast Brought to You By, Charlie Herman reports on the hi...

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May 13, 2020

When you think about Star Wars, what’s the first thing that comes to mind? Lightsabers? Spaceships? Alien creatures? What about all of the sounds that go with those things? How were those sounds made, and what makes them so good? In this episode, we explore how legendary Sound Designer Ben Burtt cre...

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April 29, 2020

That's All Folks!

Mel Blanc is a legendary voice actor who voiced more than 400 distinct characters. But in 1961, Mel was involved in a potentially fatal car accident. In this episode, we discover the unlikely source that saved him and hear how Mel spent his later years. Plus, we explore what it takes to pass the tor...

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April 15, 2020

Ehh... What's Up, Doc?

Bugs Bunny, Barney Rubble, Daffy Duck, Porky Pig, Tweety Bird, and many more were all voiced by one man, Mel Blanc. Discover the incredible life and talent that helped to elevate the animation industry into big business. Featuring interviews with Mel’s son, Noel Blanc, and voice actors Debi Derryber...

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April 1, 2020

Twenty Parts Per Thousand

The stories behind the world's most recognizable and interesting smells. Throughout history, humans have gone to great lengths to indulge their sense of smell. We explore the contemporary scent industry to see how modern creatives are utilizing works of olfactory art everywhere from Disney World to...

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March 18, 2020

There’s a town in northern Italy that’s home to the most famous violin makers in history. The museum there holds some of the most unique and prized violins in the world - but we’re in danger of losing their sounds forever. In this episode from the podcast This is Love, Phoebe Judge reports on how a ...

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March 4, 2020

From the sixties to the nineties parents worried messages hidden in rock albums would make their children do drugs and worship the devil. The truth could only be revealed if these records were played backwards. Bryan Gardiner unveils the history behind the backmasking panic and Curiosity Daily’s Ash...

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February 19, 2020

From See ‘n Say to Speak & Spell, and beyond, toys provide the soundtrack of our childhoods. Huge advancements in computer technology in recent decades mean that today’s toys can make a wider variety of sounds than ever before. In this episode, “The Toy Guy” Chris Byrne takes us on a nostalgic look ...

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February 5, 2020

We know that music has the power to affect our moods, but you might be surprised by just how deep the rabbit hole goes. Music can affect our brains and bodies in profound ways. Professor Jessica Grahn tells us how our love for music has shaped us as humans while Nate Sloan unpacks our appreciation o...

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January 22, 2020

John Cage was a respected composer when, in 1952, he created his “silent piece”, 4’33’’ - a piece that would have the music world scratching their heads. This episode asks whether 4’33’’ is really “silent”, and we explore the history of a piece musicians still talk about today - and speak to the man...

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January 8, 2020

No bass for you!! In 1987, TV composer Jonathan Wolff was still trying to make a name for himself in Hollywood. Then one day, he got a call from Jerry Seinfeld, who needed music for his new sitcom. This is the story behind the unforgettable music of Seinfeld, and how Jonathan Wolff’s unique approach...

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December 16, 2019

Sonic Wonderland

There’s a reason we call tourists “sightseers”. As a society, we’re totally obsessed with the way things look. But our world is full of beautiful, fascinating and bizarre sounds. Join us on a sonic adventure around the world, as we climb up sand dunes, plunge into the Arctic Ocean, and even travel b...

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December 2, 2019

Historically Speaking

Language is a uniquely human gift. We have shaped it to our individual and cultural needs, and it has shaped us in return. Professor Lera Boroditsky reveals how the sounds we make with our mouths influence what’s going on inside our brains. And podcaster Helen Zaltzmann shows us how important langua...

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November 18, 2019

When was the last time you turned off your radio and just listened to your car? What’s really going on under the hood? We chat with our own Nick Spradlin about the simple force at the heart of every gasoline engine and talk with legendary recordist Watson Wu about how the sound of wild and powerful ...

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November 4, 2019

Baby Shark is a mega viral YouTube video, an unstoppable earworm, a top 40 hit, a Eurodance smash, a decades old campfire song, and the center of an international copyright dispute. In this episode from the podcast Decoder Ring, we explore the strange history of the song, what makes it so catchy, an...

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October 21, 2019

Singing with others is a powerful form of expression. That's why the composer Eric Whitacre started the Virtual Choir; an experiment that connects singers from every corner of the globe. In this episode, we hear how a choir can unite people from different backgrounds to achieve a common goal - creat...

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October 14, 2019

The Price is Right (Yeah, Yeah!)

As a young composer, Edd Kalehoff was looking for his break. In the early 70s he struck gold, writing the theme song and music cues for The Price Is Right. Twenty Thousand Hertz is produced out of the studios of Defacto Sound, and hosted by Dallas Taylor. Follow the show on Twitter & Facebook. Beco...

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October 7, 2019

The Loudness Wars

In part 2 of the story of mastering, we explore the consequences of the Loudness War and call out some of the worst offenders. We’ll also hear about the artists and mastering engineers who have been fighting back, and learn how modern listening habits might finally put an end to this sonic arms race...

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September 23, 2019

The [COMPRESSED] History of Mastering

Join us on a musical journey from the Golden Age of analog mastering to the digital methods of today. We’ll find out why the music industry became obsessed with loudness, and learn how the digital era transformed the way that music sounds. Featuring Greg Milner and Ian Shepherd. Twenty Thousand Hert...

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September 16, 2019

You've Got Mail!

How a simple soundbite on America Online became one of the most recognizable sounds of the internet age, plus the creation of a whole new musical instrument. This episode features Elwood Edwards, the man behind the famous AOL “You’ve Got Mail” soundbite, and Bosco and Maya Kante, inventors of the El...

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September 9, 2019

We rarely think about the way we speak. For most of us, it just happens. In this episode, we catch up with two professional voice artists and chat about their rituals and techniques that help them communicate. Featuring voice actor Harry Shearer and NPR vocal coach Jessica Hansen. Twenty Thousand He...

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August 26, 2019

Humans have been fascinated with acoustics since our earliest ancestors. From Roman amphitheaters to modern symphony halls, we’ve designed our spaces with sound in mind. But the relationship between acousticians and architects isn’t always smooth sailing. In this episode, we explore the way acoustic...

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August 12, 2019

Stradivarius violins are reputed to have an exquisite sound that cannot be replicated or explained. Why is that? And what, exactly, is a Stradivarius violin anyway? This episode features interviews with The Strad magazine’s managing editor, Christian Lloyd, and violin maker Joseph Curtin. Twenty Th...

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July 29, 2019

The 808 is arguably the most iconic drum machine ever made. Even if you’ve never heard of it, you’ve definitely heard it. It’s in dozens of hit songs -- from Usher to Marvin Gaye, Talking Heads to The Beastie Boys -- and its sounds have quietly cemented themselves in the cultural lexicon. In this ep...

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July 15, 2019

Companies spend a lot of time and effort perfecting the look of their brands. But now what a brand sounds like matters just as much. We trace the history from songs to jingles to what's called sonic branding, following the creative process that led to AT&T’s iconic four-note sound logo. And we'll ex...

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July 1, 2019

The last few decades have seen amazing improvements in cochlear implant technology. Professor Michael Dorman reveals what they really sound like, and how they can help out with more than just our hearing. But should we be advocating cochlear implants at all? We chat with deaf graphic designer Brando...

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June 17, 2019

Plants that Sing

Have you ever wondered what your dog or cat would say to you if they could talk? How about your plant? In this episode we explore the world of bioacoustics and cognitive ecology. Featuring MIDI Sprout creator, Joe Patitucci, and ecologist, Monica Gagliano, who is the author of Thus Spoke the Plant. ...

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June 3, 2019

Sonic Illusions

What we hear is incredibly personal and we all hear things differently. Sometimes our ears can even play tricks on us. Sonic illusions put a spotlight on the unique function of our hearing and how our backgrounds and biology affect how we process sound. Psychologist Dr. Diana Deutsch and neuroscient...

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May 20, 2019

Mother of Dragons(ounds)

Game of Thrones is a global phenomenon that has redefined the fantasy genre. Viewers from around the world gather every week to anxiously watch what will happen next. The actors, writers, directors, and visual artists have all received well-earned recognition for their role in the show. But some her...

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May 6, 2019

Over his long career, Gordon Hempton has mastered the art of truly listening. He’s known as the Sound Tracker. Some people call him an acoustic ecologist. His recordings and books have made him an international expert on the beauty and importance of undisturbed, natural soundscapes — and the ways hu...

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April 22, 2019

Voyager Golden Record

In the late '70s, NASA launched Voyagers 1 & 2 to explore the furthest reaches of our solar system and beyond. But something amazing was included on those space probes... a 90-minute time capsule of sounds, language, and music from Earth called The Golden Record. Its intended recipient? Any intellig...

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April 8, 2019

When was the last time you stopped and really listened to birdsong? Ever wonder what they’re singing about? We chat to Kenn Kaufman and Dr. Irene Pepperberg about the extraordinary complexity to the avian arias, how they’re produced, what they mean, and how vocal acrobatics can reveal a surprising h...

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March 25, 2019

We unpack how touch tone dialing changed communication forever. Join us on a deep, quirky dive into telephone history. We’ll also deconstruct these sounds and reveal their hidden brilliance. Featuring author Annabel Dodd and telephone aficionado Jim Hebbeln of the Telecommunications History Group. ...

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March 11, 2019

Movie trailers have undergone a huge evolution. They’ve gone from those cheesy voice-of-God narrators in the ‘80s and ‘90s, to boojes and bwaas. Professor James Deaville delivers the history of trailers, and Youtuber Craven Moorhaus offers a hilarious takedown of the sounds and dialogue that are com...

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February 25, 2019

Dining on Decibels

Have you noticed how loud it gets in restaurants these days? Have you found yourselves shouting just to keep a conversation going? Architecture critic Kate Wagner explains how changing design trends have led to dining experiences that aren’t just antisocial, but are negatively impacting our health a...

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February 11, 2019

Alarm sounds have been around almost as long as humans themselves. But as our world has transformed, so have they. Today’s alarms are having an unexpected effect on our minds and bodies, and can even be putting our lives at risk when we’re at our most vulnerable. Dr Judy Edworthy and Yoko Sen talk t...

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January 28, 2019

For decades, NFL strategy slowly evolved from each team running a dozen different plays, to rigid schemes with coaches sending in orders through codewords and secret signals. Then, one piece of audio technology revolutionized the game. Beginning in the early 1990's, the NFL allowed coaches to speak ...

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January 14, 2019

Our world is filled with sound. It exists in even the quietest corners of the planet. But what happens when all that sound is taken away? What is silence? There are very few places on Earth where silence actually exists, but in this episode, Dallas experiences it for himself thanks to a special room...

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December 26, 2018

What happens when we leave Earth's thin blanket of atmosphere, and what do other planets sound like? In this special episode, we have completely remixed one of our favorite shows! It's been re-written, re-edited, re-narrated, has new music, and even some new additional content. If you've heard the o...

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December 10, 2018

Beatboxing began as an imitation of a drum machine, but over the decades it has evolved as a means to emulate any number of percussive sounds. Now beatboxing is being studied by scientists who are fascinated by the vocal dexterity of artists. By examining beatboxing scientists are hoping to unlock m...

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November 26, 2018

Being George Clooney

Hollywood films are huge internationally. But how are these films adapted for foreign languages? We delve into the not so talked about process of dubbing. Featuring the world's most popular voice actors, directors, and producers. Featuring: Andre Sogliuzzo, John Ptak, Shaktee Singh, Debra Chinn, Ma...

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November 12, 2018

Xbox Startup Sound

The Xbox startup sound is an audio logo that’s become synonymous with the game console. But its origins are rooted in solving a logistical problem; how to entertain gamers while they wait for their machines to finish booting up. Featuring Sound Designer and Composer Brian Schmidt and Sound Designer,...

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October 29, 2018

Theater for the Mind

The "golden age of radio drama" may have been a stellar period for storytelling -- but the stories weren't all golden bright. Sci-fi and horror radio dramas explored deep anxieties people felt from the Depression through the Cold War, and set the stage for later stories that couldn't be told yet wit...

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October 15, 2018

If you've ever watched an old sci-fi or horror film, you've probably heard the hair-tingling, alien sounds of the Theremin. It's a spooky, strange instrument that's played without being touched, and has become a staple for classic horror movies. This is the story of the Theremin's mysterious journey...

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October 1, 2018

Classic Cartoon Sound Effects!

Cartoon sound effects are some of the most iconic sounds ever made. Even modern cartoons continue to use the same sound effects from decades ago. How were these legendary sounds made and how have they stood the test of time? Featuring Oscar-winning sound designer Mark Mangini of the Formosa Group, a...

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September 17, 2018

Twenty Thousand Hertz

50 episodes! When we launched this podcast two years ago, we never imagined our passion project would come this far. To mark the occasion, we’re taking a peek behind the scenes of the show. Join the Defacto Sound team as they take you into the inspiration, creation, and people behind Twenty Thousand...

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September 4, 2018

Odds are if we asked you sing your favorite advertising jingle from when you were a kid, you’d be able to recall every single lyric. Yet we don’t hear many advertising jingles these days. Why is that? This is the story of the rise, fall, and brain science of the jingle. In this episode we talk to UC...

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August 20, 2018

We are constantly exposed to sonic branding in television, radio, and web commercials. We deconstruct some of the most impactful audio logos in history and explain how the brain interprets them. Featuring Scott Simonelli, CEO of Veritonic and Walter Werzowa, founder of Musikvergnuegen. Twenty Thou...

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August 6, 2018

Invisible actors create worlds of sound in everything you watch - from Jaws to The Wire. With special guests, Carl Gottlieb, screenwriter and author of "The Jaws Log"; Dann Fink, loop group director and co-owner of Loopers Unlimited; Stuart Stanley, Sound Supervisor; loop group members Eboni Booth, ...

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July 23, 2018

What do you hear when you walk into a Casino? It can feel like chaos, but each sound is carefully curated to draw you in and make you stay. One collection of sounds are scientifically and artistically designed to keep the gambler, gambling. Slot machines. This episode features interviews with Willie...

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July 9, 2018

The way our brains process sound affects the way we respond to sound. This episode is about why that happens in those who suffer from misophonia, the hatred of certain sounds. Featuring researcher Dr. Phillip Gander, psychologist Dr. Ali Mattu, and misophonics Meredith Rosol and Josh Furnas. Check...

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June 25, 2018

THX Deep Note, Part 2

Whether you're 6 years old, or 96 years old, one of the most memorable parts of going to the movies for the last three decades has been the THX "Deep Note" trailer. Unfortunately, they lost the original sound file. What happened? Also, what do sound designers & musicians think about it? Featuring An...

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June 11, 2018

THX Deep Note, Part 1

Since 1983 one of the most memorable parts of going to the movies has been the THX certification played during the previews. The accompanying sound logo called “The Deep Note” has fascinated, terrified, and mystified audiences for over three decades. What is THX really? How was “The Deep Note” creat...

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May 29, 2018

There’s a sample of music that’s been heard in over 2,000 songs. Odds are you’ve heard it many times and didn’t even realize you were listening to the same breakbeat. The amen break might be the most sampled piece of music in history. Where did it come from? This episode features interviews with art...

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May 14, 2018

Ultrasonic Tracking

Did you know your phone is a really good listener? Apps on your phone might be sending and receiving data over ultrasound. Ultrasonic communication is used for everything from tracking your daily habits to enabling light shows at music festivals. We hear from Yale Privacy Lab's Sean O’Brien and Mich...

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April 30, 2018

Do certain sounds give you the head tingles? If yes, this episode is full of ear candy for you! In this episode, we learn all about the phenomenon called autonomous sensory meridian response—or ASMR for short. This soothing episode features researchers Giulia Poerio (University of Sheffield), Craig ...

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April 16, 2018

Amazing concerts, Broadway musicals, Cirque du Soliel performances, and other live shows live and die on their sound design. This is the story of how sound design for live performances went from zero to speakers in the seats and where the industry might go next. This episode features interviews with...

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April 2, 2018

The Music in Speech

The way you speak has rhythm, timbre, and pitch. It’s more like music than you might think. We chat with The Allusionist host Helen Zaltzman, Martin Zaltz Austwick from Song by Song, Music Psychologist Dr. Ani Patel of Tufts University, and Drum Composer David Dockery on how musical our speech reall...

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March 19, 2018

Seizure Sonification

Brant Guichard has heard "The Music" for as long as he can remember. Brant has a particular type of epilepsy where he hears what are called "musical auras" whenever he has a seizure. Brian Foo, aka the Data Driven DJ, introduces a different musical element to Brant's experience of seizure. 20K is m...

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March 5, 2018

Broadway’s award-winning, record-breaking, smash hit, Hamilton, is a musical unlike any other. Get the story from people in the room where it happens of how sound helps tell the musical’s story eight times a week. We talk to Nevin Steinberg, Hamilton’s Tony-nominated sound designer, Benny Reiner, Gr...

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February 19, 2018

Emergency Alert System

When people in Hawaii were falsely alerted of a Ballistic Missile threat, the first thing they heard was the sound of an emergency alert. For decades, this tone has alerted us to local weather emergencies and other important events, but it has never been used for its original purpose. In this episod...

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February 5, 2018

“Elevator music” was once the sound of restaurants, offices, and elevators in mid-20th century America. But ironically these bland, string-driven instrumental tracks are never heard in elevators anymore. In this episode, we speak with Joseph Lanza, the author of “Elevator Music,” and Julian Treasure...

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January 22, 2018

Six O'Clock Soundtrack

Ever wonder how the music on your favorite news stations is created? Dive in with news music appreciator + journalist Victor Vlam; Composer Matthew Kajcienski, Composer Irad Eshel, Composer Adarsh Thottetodi, Composer David Lowe, Musicologist James Deaville, Film and TV studies Professor Deborah Jar...

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January 8, 2018

A mysterious Tweet from one of the most famous people on Earth: A single phone number, zero context. What does it mean? Why was it posted? Would you call it to find out? For commercial director Duncan Wolfe, this hypothetical became a very real social experiment when his cell phone number was accide...

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December 25, 2017

The science behind sound reproduction has been studied for centuries. But what will research uncover in the centuries to come? One man made it his life’s mission to find out, and a gift he made to the world will continue that mission for the foreseeable future. Explore the extraordinary life of Dr. ...

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December 11, 2017

The Bleeps, the Sweeps, and the Creeps!

There are sounds we interact with every single day and never give a second thought. Our phones, computers, cars, and other devices are constantly communicating with us through user interface sounds and it’s their job to be heard, but not distracting. In this episode, we speak with Will Littlejohn, F...

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November 27, 2017

For over two decades, every time you turned on a Mac, you were greeted by a familiar sound. It’s appeared as a punchline in The Simpsons, and in movies like WALL•E. It’s a sound some of us tried to hide from our parents as we turned on the computer in the middle of the night. It’s a sound that’s tra...

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November 13, 2017

Theme parks have a way of transporting us to magical places, and sound is crucial in maintaining the illusion. From the most action-packed attractions to the background music playing between park areas, theme park sound designers have thought of it all. In this episode, we speak to Joe Herrington an...

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October 30, 2017

We uncover how scary sound effects are created in horror films as well as dissect how sound triggers the fear mechanisms in humans. Featuring Formosa Group Senior Sound Editor/Sound Designer Trevor Gates and Dan Blumstein, professor of Ecology and Evolutionary Biology at UCLA. 20K is made out of th...

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October 17, 2017

Acoustical Umbilical Cord

Many animals, humans included, are natural-born criers. It’s the most basic form of communication from right when we come into the world. But us humans are unique: we keep on crying until the day we die. What was born as a survival mechanism, develops a deeper fundamental need as we grow older. In t...

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October 3, 2017

Video games are a growing industry and every play-controlled experience is defined by its harmony of music, sound effects, and voice acting. In this episode, we reveal how these elements of a video game's soundscape are crafted and come together to tell an interactive story. The most sophisticated s...

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September 19, 2017

Watergate might be the most widely-referenced scandal in our nation’s history. The actual word itself has been appropriated in order to name many later scandals. But for a new generation of Americans, the word Watergate might not mean much. What was it? Who was involved and why was it important? Fea...

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September 5, 2017

Sonic Seasoning

Taste is one of our most subjective of the five senses. A flavor that elicits delight in one individual may evoke strong disgust in another. And while we all have a basic understanding of flavor, we rarely think about the other sonic factors that may be affecting how we interpret different tastes. I...

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August 22, 2017

Fight or Flight

Are you afraid to fly? Does even the thought of boarding an airplane make you anxious? You’re not alone. Millions of Americans suffer from clinical aviophobia. While some manage to distract themselves long enough to endure a flight, countless others avoid flying altogether. What are those mysterious...

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August 8, 2017

What is the oldest recorded sound in history? For over 100 years researchers thought they knew until a mind-blowing discovery by historians found something new - and technological advances allowed it to be played back for the first time in history. What is the oldest recording of a musical performan...

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July 25, 2017

Noise Pollution

Noise pollution is something we’ve all experienced. Road construction, motorcycles, passing aircraft - the list goes on and on. Other than being just plain annoying, what effect does noise pollution have on our lives? In this episode, we take a look at the physical and psychological effects of noise...

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July 11, 2017

20,000 dBs Under the Sea

71% of the Earth is covered by water. And most of us imagine it to be a serene, almost silent world. But why should we have all the fun up here? Discover what sound is like just below the surface and all the way down to the ocean's depths. And see how mankind might be making it unpleasant for everyo...

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June 27, 2017

Evolution of Accents

When you describe yourself to others you might mention your height, hairstyle, or maybe your build. But one of the most telling things about you is something you can’t even see, yet it defines you more than you realize. Your accent tells others where you’re from, who you identify with, and maybe eve...

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June 13, 2017

You might not realize it, but audio can be just as crucial to solving a case than video or eyewitness testimony. But understanding how to interpret audio evidence, or having the ability to enhance it to a point of intelligibility, requires highly-specialized training and expensive software. Meet Ken...

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May 30, 2017

The Wilhelm Scream

When it comes to movie screams, what’s the first one you think of? Is it a scream that evokes a sense of fear, pain, or maybe even… humor? Perhaps you immediately think about a famous “Scream Queen” or a specific scene from a movie. But you may not realize that the most famous scream in Hollywood ha...

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May 16, 2017

We hear disembodied voices all the time, in everything from cartoons and anime to commercials and trailers. It seems easy, but it's actually an intricate craft involving a great amount of training. What does it take to create multiple, unique personalities using only a voice? Featuring voice actors ...

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May 2, 2017

Our ears are sensitive, but we often don’t treat them that way. We are born with the ability to hear up to 20,000 Hz. As we age, our hearing range diminishes. On top of that, the more exposure we have to loud sounds, the greater the impact it has on our ability to hear. Find out what happens once we...

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April 18, 2017

The Good, the Bad & the Irritating

Some sounds are like rug burn for your ears, while others are pleasant and soothing. We explore these sounds and get to the bottom of why we might interpret them as “good” or “bad”. Featuring Tommy Edison and David Poeppel. Twenty Thousand Hertz is hosted by Dallas Taylor and produced out of the s...

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April 4, 2017

When you listen to a movie, everything the actor touches sounds crisp and clean. However, none of it was recorded on the movie set. Go behind the scenes with some of the unsung heroes of our movie experience. Featuring Fred Newman and Skywalker Sound’s Foley Team, John Roesch, Shelley Roden, and Sco...

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March 21, 2017

When we think about sound, our only reference is what it’s like here on Earth. What happens when we leave this thin blanket of atmosphere, and what do other planets sound like? Featuring Dr. Lori Glaze, Dr. Keith Noll, Dr. Scott Guzewich from NASA’s Goddard Space Flight Center. Twenty Thousand Hert...

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March 7, 2017

Dolls That Talk... And Some That Listen

Talking dolls have been around for over a century, but the fascination with making inanimate objects seem human reaches back into our early history. What is it about creating a companion that can interact with us, especially for a child, that fascinates us so? And what will that look like as our tec...

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February 21, 2017

Some car sounds are more obvious like the horn or engine... but what about the not-obvious-until-you-point-them-out sounds like the hollow thud of a trunk or the click of a latch? The sounds a car makes are so closely associated with quality, so how, exactly, do car makers handle this aspect of the ...

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February 7, 2017

Audio Descriptions

Did you know there might be a track of audio on your favorite movies and television shows that describe all of the actions on screen? This technology was designed for the visually impaired, but it could be used for the masses. It’s still not as widely provided as some would hope. Meet the consumers ...

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January 24, 2017

Movie Soundtrack

When you think of a movie soundtrack, you probably think music. And sure, that’s one of the many, many things going on there. What else goes into making a scene sound “natural”? It isn’t what you’d think. Meet a major motion picture sound designer who unpacks all the layers of sound that go into you...

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January 10, 2017

From Analog to Digital

The transition from analog to digital seemed like a fairly simple and expected process. So why are so many people reverting back to analog? In this episode, you'll learn about the Jedi skills old radio DJs had to have to spin vinyl on the radio, and meet a man who’s found himself trapped in a digita...

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December 27, 2016

Sound of Extinction

When was the last time you heard a dial-up modem? A dot matrix printer? A CD dropping into its plastic tray? Did you know it would be the last time? We talk to Rick Adams, a British reporter, about the impact of Big Ben being silenced for repairs next year and Madeline Ashby, a futurist, who has som...

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December 13, 2016

There's this place right at the border between Detroit, MI, and Windsor, ON where there's this hum… It rattles dishes, makes people sick, it's even making people move away. And the government does not want you to know what's making it. Explore the mystery of the Windsor Hum with the man who is worki...

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November 29, 2016

Primitive, yet iconic, 8-bit audio defined a generation through video game sounds and music. Discover the history and innovation behind those audio marvels that still fascinate today. Featuring Microsoft Sound Designer, Zachary Quarles, and David Murray, The 8-Bit Guy. Twenty Thousand Hertz is hoste...

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November 15, 2016

NBC’s three little chimes didn’t just define a television network, they defined a generation. Where did they come from and what is the surprising impact they have had on current and future media? Featuring the last person to play the NBC chimes on the NBC radio network, broadcaster Rick Greenhut, an...

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October 31, 2016

When Siri launched in 2011, she permanently changed the way people interacted with their technology. What was it like to be the voice behind that voice? And how did they make that voice come to life? Featuring the original voice of Siri, voice actor Susan Bennett, and Director of Speech to Text Tech...

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