In the 1960s, stereo sound revolutionized the music industry. But it turns out, a pioneering engineer named Alan Blumlein had actually invented stereo a full three decades earlier. Due to tragic events in World War II, his innovations were forgotten for decades. In this episode, we worked with OnePlus to tell the story of how audio has evolved from mono, to stereo, to quadraphonic, to surround sound and beyond. Today, we even have immersive, three-dimensional systems that can simulate 128...

Have you ever seen something so cute that you just wanted to squeeze it? Have you ever felt sleepy after a big meal? Or enjoyed bouncing on a puffy cushion? There are words for all of these, just not in English. In this game show episode, 20K producer and resident linguist Grace East cooks up an “untranslatable” words quiz for Dallas and fellow producer Andrew Anderson. How many words can you guess? Watch our video shorts on Youtube, Instagram, and TikTok. Follow us on Reddit, Twitter, and...

For decades, the jingle was king. But in the last twenty years, jingles have nearly gone extinct. Many brands have now dropped their melodic earworms in favor of spoken word slogans. Today, there’s just one industry where jingles are still as common as ever: insurance. The question is, why? Featuring Jeanna Isham of the Sound in Marketing podcast, audio branding expert Colleen Fahey, and Brand Manager Sergio Trujillo. Snag a $20 super soft tee at shop.20k.org. Watch our video shorts on...

“Soundalikes,” also called “voice doubles,” are voice actors who perform as characters that were originally played by someone else. They’re used extensively by studios like Disney and Pixar, in order to keep their iconic characters consistent across games, rides, toys, and TV shows. In live action movies, soundalikes fill in for the leads, and record lines for the film’s many rough cuts. But being a great voice double is about much more than just being a good impressionist. Featuring Rick...

In a noisy, tumultuous world, how can we find inner peace? This episode features two stories about the transformative power of silence. In the first, the Lieutenant Governor of Washington State abandons politics to become a Jesuit novice, and takes a temporary vow of silence. In the second, a death row inmate at San Quentin discovers Buddhist practices that help to calm his mind, and embrace compassion. Featuring Cyrus Habib, Jarvis Masters, Leigh Marz, and Justin Zorn. Snag a $20 super soft...

The voices inside our navigation systems are with us nearly every day. They frustrate us when they lead us astray, and guide us through our most memorable adventures. But who are the people behind those voices? In this episode, an Australian musician discovers she is the voice inside millions of GPS units, and the Polish voice of Google Maps goes head to head with a robot. Featuring “The GPS Girl” Karen Jacobsen and “Głos Google Maps” Jarosław Juszkiewicz. Watch our new video shorts on...

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 gonna get toasty. Watch our new video shorts on YouTube, Instagram, and TikTok! Vote for Twenty Thousand Hertz in the Listener’s Choice Signal Awards! Follow the show on Twitter, Facebook, &...

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 ad-free + our bonus show MicroHertz! Visit shopify.com/20k to get a free 14-day trial with Shopify’s entire suite of features. Episode transcript, music, and credits can be found here:...

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 Bob’s daughter Michelle Moog-Koussa, Don’s collaborator Ami Radunskaya, and journalist Ryan Gaston. Watch Welcome to Synth, our first original Youtube video. Follow the show on Twitter, Facebook,...

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 could be. And it changed the sound of pop music forever. Featuring journalist Ryan Gaston and composer David Rosenboom. Watch Welcome to Synth, our first original Youtube video. Follow the show...

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, this is a brand new story about the world of Audio Description. Featuring AD Narrator Roy Samuleson and AD experts Thomas Reid and Melody Goodspeed.  Follow the show on Twitter, Facebook, &...

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 Moorhaus crafts a hilarious takedown of the overused clichés of modern blockbuster trailers. We’ve remixed one of our most popular episodes for your listening pleasure. Follow the show on Twitter,...

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 about, what made them so appealing, and why they ultimately faded away. Featuring Doug Fraser of the Curious State podcast, 900 number experts Bob Bentz and David Wood, and a surprise guest… Follow...

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 government made her out to be? This story comes from the History Daily podcast. Follow the show on Twitter, Facebook, & Reddit. Subscribe to our Youtube channel. Sign up for Twenty Thousand...

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, Bev heard herself saying all kinds of wild and inappropriate things. So, she decided to sue. In this episode, Bev tells her story, and we hear from the voice who replaced her. Follow the show on...

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 their own closets, they managed to turn lockdown into an opportunity for innovation. Featuring Ted Lasso’s Supervising Sound Editor Brent Findley and Dialog Editor Bernard Weiser.  Follow the show...

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. Laurie Santos of The Happiness Lab joins Dallas to create a Handbook for Sonic Happiness. Featuring auditory psychologist David Poeppel, psychology researcher Giulia Poerio, clinical psychologist Ali...

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 investigate the mysterious origins of a famous 3-note sting. Featuring Sound Historian Patrick Feaster and Composer Dick Walter. Follow the show on Twitter, Facebook, & Reddit. Subscribe to our...

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 the eternal argument over analog vs. digital. This interview comes from The Jordan Harbinger Show. Follow the show on Twitter, Facebook, & Reddit. Subscribe to our Youtube channel here. Become...

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 episode #150, “Breathe.” To get MicroHertz and our entire catalog completely ad-free, sign up at 20k.org/plus, or by tapping Subscribe in Apple Podcasts. Learn more about your ad choices. Visit...

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 something that meant the world to him… and how that loss eventually led him to become the person he is today. This story comes from the podcast Meditative Story. Follow the show on Twitter, Facebook,...

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 around us, and what it takes to harness that mysterious power. Featuring psychologist Diana Deutsch, hearing researcher Matthew Winn and author Mike Chorost.  Follow the show on Twitter, Facebook,...

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? And how do you get in the mindset of a legendary rap star, in order to write verses for them? Featuring rapper and ghost songwriter Skyzoo and producer Dame Taylor. Follow the show on Twitter,...

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 secret startup sounds that were nearly lost to time. Featuring former Microsoft Lead UI Designer Jensen Harris and Sound Designer Matthew Bennett. Apply for the full time Associate Producer...

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 sounds through Windows 7, and what each one says about Microsoft’s evolving technology. Featuring former Microsoft Lead UI Designer Jensen Harris and Sound Designer Matthew Bennett. Apply for the...