
Twenty Thousand Hertz
The stories behind the world’s most iconic and fascinating sounds.
Latest episodes

Aug 4, 2021 • 19min
The mysterious “Windsor Hum” is finally solved!
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 of our oldest and most popular episodes. Featuring documentary filmmaker Adam Makarenko.Follow Dallas on Instagram, TikTok, YouTube and LinkedIn.Join our community on Reddit and follow us on Facebook.Become a monthly contributor at 20k.org/donate.If you know what this week's mystery sound is, tell us at mystery.20k.org.Hiring? Sign up at Indeed.com/Hertz and get a $75 credit to sponsor your first job post for better visibility, more applications, and quicker hiring times.Visit monday.com/podcast for your free two-week trial.Get a one-month free trial of a Premium Membership at skillshare.com/20k.Episode transcript, music, and credits can be found here: www.20k.org/episodes/thewindsorhum Learn more about your ad choices. Visit megaphone.fm/adchoices

Jul 21, 2021 • 37min
The Buzzer: Are there secret spy messages on the radio?
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 may have an even more sinister purpose. Featuring computer engineer Andrus Aaslaid, historian Maris Goldmanis, and documentary photographer Lewis Bush.Follow Dallas on Instagram, TikTok, YouTube and LinkedIn.Join our community on Reddit and follow us on Facebook.Become a monthly contributor at 20k.org/donate.If you know what this week's mystery sound is, tell us at mystery.20k.org.We’re hiring! Visit defactosound.com/careers for more info.To dive deeper into numbers stations, visit numbers-stations.com and priyom.org, or check out Lewis’ book, Shadows of the State.Episode transcript, music, and credits can be found here: https://www.20k.org/episodes/thebuzzerVisit monday.com/podcast for your free two-week trial.Go to everyplate.com and enter the promo code, 20k199 to get started for just $1.99 a meal. Learn more about your ad choices. Visit megaphone.fm/adchoices

Jul 7, 2021 • 31min
Stay Tuned: The new voices of the Looney Tunes
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 than done. Featuring voice actors Eric Bauza and Jeff Bergman, and showrunner Pete Browngardt.Follow Dallas on Instagram, TikTok, YouTube and LinkedIn.Join our community on Reddit and follow us on Facebook.Become a monthly contributor at 20k.org/donate.If you know what this week's mystery sound is, tell us at mystery.20k.org.Get a 4-week trial, free postage, and a digital scale at Stamps.com. Just click the microphone at the top right corner and type the promo code 20k.Hiring? Sign up at Indeed.com/Hertz and get a $75 credit to sponsor your first job post for better visibility, more applications, and quicker hiring times.Episode transcript, music, and credits can be found here: https://www.20k.org/episodes/staytuned Learn more about your ad choices. Visit megaphone.fm/adchoices

Jun 23, 2021 • 27min
Inside the Foley Prop Room: Frozen, Jurassic Park & more
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, and Foley Mixer Darrin Mann.Follow Dallas on Instagram, TikTok, YouTube and LinkedIn.Join our community on Reddit and follow us on Facebook.Watch The Sounds of Space: A sonic adventure to other worldsSubscribe to our Youtube channel here.Become a monthly contributor at 20k.org/donate.If you know what this week's mystery sound is, tell us at mystery.20k.org.Get 10% off your first month at betterhelp.com/20k.Hiring? Sign up at Indeed.com/Hertz and get a $75 credit to sponsor your first job post for better visibility, more applications, and quicker hiring times.Episode transcript, music, and credits can be found here: https://www.20k.org/episodes/proptilyoudrop Learn more about your ad choices. Visit megaphone.fm/adchoices

Jun 9, 2021 • 26min
The Art of Foley: Bringing Slimer & Batman to life
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 audience doesn't even notice it's there. In this episode, we tour the Warner Brothers Foley stage with Foley Artists Alyson Moore and Chris Moriana, and Foley Mixer Darrin Mann.Follow Dallas on Instagram, TikTok, YouTube and LinkedIn.Join our community on Reddit and follow us on Facebook.Become a monthly contributor at 20k.org/donate.If you know what this week's mystery sound is, tell us at mystery.20k.org.Get 10% off your first month at betterhelp.com/20k.Episode transcript, music, and credits can be found here: https://www.20k.org/episodes/foleyartists Learn more about your ad choices. Visit megaphone.fm/adchoices

May 26, 2021 • 31min
Leaky Pipeline: The fight that revolutionized cinema sound
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 about the groundbreaking work of women in the field of professional audio. Featuring audio engineer Leslie Gaston-Bird and LC Concept co-founder Elisabeth Löchen.Follow Dallas on Instagram, TikTok, YouTube and LinkedIn.Join our community on Reddit and follow us on Facebook.Become a monthly contributor at 20k.org/donate.If you know what this week's mystery sound is, tell us at mystery.20k.org.Get a free one month trial of Headspace at headspace.com/hertz.Get 10% off your first month at betterhelp.com/20k.Purchase Women in Audio, by Leslie Gaston-Bird.Episode transcript, music, and credits can be found here: https://www.20k.org/episodes/theleakypipeline Learn more about your ad choices. Visit megaphone.fm/adchoices

May 19, 2021 • 17min
Auditory Icons: Credit card beeps to driverless car melodies
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 designer Connor Moore and psychoacoustic expert Susan Rogers.Follow Dallas on Instagram, TikTok, YouTube and LinkedIn.Join our community on Reddit and follow us on Facebook.Become a monthly contributor at 20k.org/donate.If you know what this week's mystery sound is, tell us at mystery.20k.org.Check out Wireframe wherever you get your podcastsEpisode transcript, music, and credits can be found here: https://www.20k.org/episodes/auditoryicons Learn more about your ad choices. Visit megaphone.fm/adchoices

May 12, 2021 • 31min
Progression Obsession: Pop music’s most used chord changes
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 from, and what makes them so enduring? Featuring music journalist Jennifer Gersten and comedic musician Benny Davis. Follow Dallas on Instagram, TikTok, YouTube and LinkedIn.Join our community on Reddit and follow us on Facebook.Become a monthly contributor at 20k.org/donate.If you know what this week's mystery sound is, tell us at mystery.20k.org.Get a 4-week trial, free postage, and a digital scale at Stamps.com. Just click the microphone at the top right corner and type the promo code 20k.Compare home and car insurance rates at policygenius.com.Episode transcript, music, and credits can be found here: https://www.20k.org/episodes/progressionobsession Learn more about your ad choices. Visit megaphone.fm/adchoices

Apr 28, 2021 • 22min
SM7: The mic that shaped sound and culture
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 rediscovery by podcasters and streamers.Follow Dallas on Instagram, TikTok, YouTube and LinkedIn.Join our community on Reddit and follow us on Facebook.Become a monthly contributor at 20k.org/donate.If you know what this week's mystery sound is, tell us at mystery.20k.org.Episode transcript, music, and credits can be found here: https://www.20k.org/episodes/sm7 Learn more about your ad choices. Visit megaphone.fm/adchoices

Apr 14, 2021 • 30min
The Sound of Minecraft: A melancholy masterpiece w/ C418
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 Rosenfeld (also known as C418) unpacks how he created the original music and sounds for the game.Follow Dallas on Instagram, TikTok, YouTube and LinkedIn.Join our community on Reddit and follow us on Facebook.Become a monthly contributor at 20k.org/donate.If you know what this week's mystery sound is, tell us at mystery.20k.org.Get a 4-week trial, free postage, and a digital scale at Stamps.com. Just click the microphone at the top right corner and type the promo code 20k.Compare home and car insurance rates at policygenius.com.Visit c418.bandcamp.com to purchase Daniel’s music.Episode transcript, music, and credits can be found here: https://www.20k.org/episodes/minecraft Learn more about your ad choices. Visit megaphone.fm/adchoices