Twenty Thousand Hertz

Dallas Taylor

+120 FANS

The stories behind the world's most recognizable and interesting sounds.

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#63 | Phone Tones

25:53 | Mar 25th

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 ...Show More

#29 | Let It Beep

18:05 | Nov 27th, 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 i...Show More

#23 | Sonic Seasoning

18:19 | Sep 5th, 2017

Can sound influence our taste buds? Featuring Charles Spence, head of the Crossmodal Research Laboratory at Oxford University. For more information, credits, and links visit

Hearing Loss

20:18 | May 2nd, 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 ...Show More

The NBC Chimes

13:09 | Nov 15th, 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 th...Show More

#52 | The Theremin

29:16 | Oct 15th, 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...Show More

#48 | Sonic Branding

27:34 | Aug 20th, 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 ...Show More

#40 | ASMR 🤫

23:48 | Apr 30th, 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 researche...Show More

#36 | Hamilton ⭐️

29:57 | Mar 5th, 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...Show More

#27 | Spooky Sounds

25:17 | Oct 30th, 2017

How does Hollywood create the terrifying sounds in our favorite scary movies, and why does our brain react to those sounds with fear?

#26 | The Acoustical Umbilical Cord

25:35 | Oct 17th, 2017

Why do we cry? ...and how do our tears in adulthood make us distinctively human?

Noise Pollution

20:31 | Jul 25th, 2017

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 ...Show More

Dolls That Talk... And Some That Listen

15:57 | Mar 7th, 2017

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 fascina...Show More

20k needs your help!

00:38 | Apr 17th

Click here to vote: polls close on April 18th at 11:59pm (Pacific Time)

#64 | Birdsong

28:37 | Apr 8th

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, ...Show More

#62 | The Booj

25:51 | Mar 11th

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 hilariou...Show More

#61 | Dining on Decibels

24:42 | Feb 25th

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 ant...Show More

#60 | Do Not Disturb

28:23 | Feb 11th

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 mos...Show More

#59 | BLUE! 42!

27:01 | Jan 28th

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 t...Show More

#58 | Silence

25:18 | Jan 14th

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 e...Show More

What is 20k? (2019 Trailer)

02:42 | Jan 11th

Twenty Thousand Hertz is a lovingly crafted podcast that tells the stories behind the world's most recognizable and interesting sounds. Subscribe now.

#57 | Space Remix

20:18 | Dec 26th, 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 ...Show More

#56 | Boots 'n Cats

24:32 | Dec 10th, 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 exam...Show More

#55 | Being George Clooney

32:56 | Nov 26th, 2018

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 Sogl...Show More

#54 | Xbox Startup Sound

24:38 | Nov 12th, 2018

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 Desig...Show More

#53 | Theater for the Mind

32:30 | Oct 29th, 2018

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 sta...Show More

#51 | Classic Cartoon Sound Effects!

30:37 | Oct 1st, 2018

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 s...Show More

#50 | Twenty Thousand Hertz

34:57 | Sep 17th, 2018

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 inspir...Show More

#49 | Jingles

30:18 | Sep 4th, 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 sc...Show More

#47 | Loop Groups

28:53 | Aug 6th, 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, ...Show More

#46 | Slot Machines

19:14 | Jul 23rd, 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 mach...Show More

#45 | Misophonia

19:26 | Jul 9th, 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 m...Show More

#44 | THX Deep Note, Part 2

28:19 | Jun 25th, 2018

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 ...Show More

#43 | THX Deep Note

26:53 | Jun 11th, 2018

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....Show More

#42 | Amen Break 🥁

23:24 | May 29th, 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 co...Show More

#41 | Ultrasonic Tracking 📱

23:53 | May 14th, 2018

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 ...Show More

#39 | Live Theater 🎭

23:20 | Apr 16th, 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 mi...Show More

#38 | The Music in Speech 🗣

18:14 | Apr 2nd, 2018

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 Comp...Show More

#37 | Seizure Sonification 📈

28:11 | Mar 19th, 2018

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 e...Show More

#35 | Emergency Alert System

26:14 | Feb 19th, 2018

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 ...Show More

#34 | Muzak

19:15 | Feb 5th, 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, t...Show More

#33 | Six O'Clock Soundtrack

26:48 | Jan 22nd, 2018

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 D...Show More

#32 | 3149146093

23:09 | Jan 8th, 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 socia...Show More

#31 | The Gift

21:38 | Dec 25th, 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 foreseea...Show More

#30 | The Bleeps, the Sweeps, and the Creeps!

23:46 | Dec 11th, 2017

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....Show More

#28 | Disney Parks

21:17 | Nov 13th, 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 a...Show More

#25 | Level Up

22:23 | Oct 3rd, 2017

Games are often defined by their graphics. How does sound for games work?

#24 | Watergate

33:47 | Sep 19th, 2017

How did an open reel tape recorder secretly planted in the White House basement lead to the demise of the 37th President of the United States?

#22 | Fight or Flight

25:20 | Aug 22nd, 2017

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 ...Show More

#21 | Sound Firsts

28:41 | Aug 8th, 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. W...Show More

Video: 20,000 dBs Under the Sea w/ Vox

09:29 | Jul 18th, 2017

We often think of the ocean as a quiet, peaceful place, filled with animals that don't make much noise. So when Christophe Haubursin from Vox went diving in the ocean for the first time, he was surprised at how rich the soundscape was: he could hear ...Show More

20,000 dBs Under the Sea

25:21 | Jul 11th, 2017

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 ho...Show More

Evolution of Accents

25:42 | Jun 27th, 2017

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...Show More

Forensic Audio

19:13 | Jun 13th, 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-spe...Show More

The Wilhelm Scream

20:03 | May 30th, 2017

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 r...Show More

Voice Acting

19:38 | May 16th, 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 persona...Show More

The Good, the Bad & the Irritating

18:39 | Apr 18th, 2017

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.  MUSIC FEATURED IN THIS EP...Show More


15:23 | Apr 4th, 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...Show More


19:06 | Mar 21st, 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 ...Show More


14:47 | Feb 21st, 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,...Show More

Audio Descriptions

13:44 | Feb 7th, 2017

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 widel...Show More

What Makes up a Movie Soundtrack?

14:50 | Jan 24th, 2017

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 wh...Show More

From Analog to Digital

15:18 | Jan 10th, 2017

Did we lose anything when we transitioned from analog to digital? 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 digital world and learn what he does to escape. Featur...Show More

The Sound of Extinction

14:20 | Dec 27th, 2016

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 nex...Show More

The Mystery Hum and its Government Coverup

10:24 | Dec 13th, 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 my...Show More

8-bit Sounds

12:31 | Nov 29th, 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 Mur...Show More

The Voice of Siri

12:30 | Nov 1st, 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 ...Show More


01:38 | Oct 31st, 2016

Twenty Thousand Hertz: Stories about the world's most recognizable and interesting sounds. Presented by Defacto Sound.