Twenty Thousand Hertz

“Blah, blah, blah” and “yada, yada, yada” have had plenty written about them. But there’s a longtime cousin of these phrases that’s much less understood. We use it all the time, yet it’s not in the dictionary. It’s not even Google-able. In this episode, we investigate the linguistic mysteries of the Five Dah Phenomenon. Featuring linguist & philosopher Paul Saka, and psychologist Helen Abadzi.

Twenty Thousand Hertz is produced by Defacto Sound.

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The Lofi Girl YouTube channel has over 14 millions subscribers, and at any given time, tens of thousands of people are listening together. Created by a mysterious French producer named Dimitri, the channel features a 24/7 livestream of an anime girl studying in her room, listening to lofi hip hop. In this episode, we dive into the Lofi Girl lore, chart the explosion of the Lofi Multiverse, and hear from a music therapist about how lofi affects our brains and behavior. This story was adapted from the Endless Thread podcast.

Twenty Thousand Hertz is produced by Defacto Sound.

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Episode transcript, music, and credits can be found here: www.20k.org/episodes/lofi-girl

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The sounds our bodies make can tell doctors all kinds of surprising things about our health. In this episode, we unpack the history of sound in medical diagnosis, from Hippocratic times, to the invention of the stethoscope, to the specialized tools and AI systems used today. Along the way, we’ll hear detailed recordings of these medical sounds, and learn what each of them means. Featuring Dr. David Steensma and Dr. Daniel Weiss.

Twenty Thousand Hertz is produced by Defacto Sound.

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Episode transcript, music, and credits can be found here: www.20k.org/episodes/sonic-diagnosis

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In Part 2 of our deep dive into Apple’s iconic sound design, the Apple Design Team unpacks the iPhone’s trio of default ringtones, the evolution of their alarm sounds, the UX sounds of the AirPods Pro, and much more. Along the way, legendary beatmaker Flying Lotus breaks down his collaboration with Apple, and the Design Team reveals how they use haptics as a standalone “instrument.” Featuring Billy Sorrentino, Hugo Verweij and Flying Lotus.

Twenty Thousand Hertz is produced by Defacto Sound.

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Episode transcript, music, and credits can be found here: www.20k.org/episodes/the-sound-of-apple-2

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Over the last few decades, Apple has produced some of the most recognizable sounds ever made. In this episode, the Apple design team pulls back the curtain on their sound design philosophy and process, from the evolution of the classic “Tritone” alert, to the surprising origins of the Apple Watch sounds, to the inspiration behind the latest notification tones. Featuring Billy Sorrentino, Hugo Verweij and Kelly Jacklin.

Twenty Thousand Hertz is produced by Defacto Sound.

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Episode transcript, music, and credits can be found here: www.20k.org/episodes/the-sound-of-apple

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For this special episode, we’ve passed the mic to our listeners to hear six unexpected stories about sound. Featuring auditory hallucinations, amplified heartbeats, long remembered voices, and whistles both strange and familiar.

Twenty Thousand Hertz is produced by Defacto Sound.

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Episode transcript, music, and credits can be found here: www.20k.org/episodes/listenerstories

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Many of the songs we sing to our children are hundreds of years old, with their original meanings obscured by history. In this episode, producer Leila Battison takes Dallas on a dark, surprising journey through history’s most famous nursery rhymes and lullabies, and up through the “Baby Sharks” and “Happy Songs” of today. Along the way, they share the songs they’ve made up for their own children, and explore why this music is just as important to parents as it is to kids.

Twenty Thousand Hertz is produced by Defacto Sound.

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Five Twenty Thousand Hertz episodes that kids would love:

Episode transcript, music, and credits can be found here: https://www.20k.org/episodes/nurseryrhymes

Whale songs are some of the most beautiful, cathartic sounds in nature. These extraordinary creatures use sound to socialize, to mate, to find food, and avoid predators. But for aquatic animals, the sounds of human activity can be absolutely devastating. With underwater noise pollution on the rise, what can we do to ensure the survival of these amazing creatures? Featuring acoustician Al Jones, Professor John Hildebrand of the Scripps Institution of Oceanography, and Vox Senior Producer Christophe Haubursin.

Twenty Thousand Hertz is produced by Defacto Sound.

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Episode transcript, music, and credits can be found here: www.20k.org/episodes/sounds-of-the-deep

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TikTok’s sonic logo is one of the fastest growing sonic logos in history. Today, that little sound is being heard millions of times a day on apps like Instagram, Reddit and Youtube… but creating it wasn’t easy. To make it, the creative team went through thousands of iterations, executed a covert marketing strategy, and fought through a final debate about a single note. Featuring Roscoe Williamson and Aifric Lennon from MassiveMusic.

Twenty Thousand Hertz is produced by Defacto Sound.

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Episode transcript, music, and credits can be found here: https://www.20k.org/episodes/tiktoksboombling

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The sound of Late Night television is a complex beast with many moving parts. In this episode, we step inside the daily hustle of Broadcast Mixer Fred Hedemark as he and his team bring the sound of Late Night with Seth Meyers to life. Along the way, Fred reveals the highs and lows of working on a high-adrenaline, live-to-tape TV show, and shares some never-heard recordings from his years on the show.

Twenty Thousand Hertz is produced by Defacto Sound.

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Episode transcript, music, and credits can be found here: www.20k.org/episodes/latenight

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