Twenty Thousand Hertz

A lovingly crafted podcast that reveals the stories behind the world's most recognizable and interesting sounds.

Arts
Design
Music
101
Classic Cartoon Sound Effects!
How were old cartoon sounds made, and how did they become so iconic?
27 min
102
Twenty Thousand Hertz
A behind the scenes look at the inspiration and creation of Twenty Thousand Hertz.
31 min
103
Jingles
What is the story behind these unforgettable earworms?
28 min
104
Sonic Branding
The story behind audio logos and what makes them so powerful.
24 min
105
Loop Groups
We go behind the scene with the actors responsible for bringing your TV and film backgrounds to life.
25 min
106
Slot Machines
The sound design and science behind today's slot machines.
16 min
107
Misophonia
The hatred of sound.
16 min
108
THX Deep Note, Part 2
What happened after THX lost its iconic "Deep Note"?
25 min
109
THX Deep Note, Part 1
What was the point of the THX "deep note" and why do we love it so much?
23 min
110
Amen Break
The history of what might be the most sampled piece of music ever.
21 min
111
Ultrasonic Tracking
Your phone might be eavesdropping on you.
21 min
112
ASMR
We explore the autonomous sensory meridian response, a phenomenon where certain sounds can trigger a pleasant physical reaction.
22 min
113
Live Theater
Sound design's critical role in theater and concerts.
20 min
114
The Music in Speech
Your voice is an instrument, and the way you choose to sing your words can communicate a lot.
15 min
115
Seizure Sonification
Brant Guichard hears music every time he has a seizure.
26 min
116
Hamilton
Find out how sound design draws the audience into the story.
27 min
117
Emergency Alert System
Explore the history of the notification system that keeps us safe.
23 min
118
Muzak
The company that changed the way public spaces sound.
16 min
119
Six O'Clock Soundtrack
How television news got its score.
23 min
120
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What does Twitter sound like when it comes to life?
22 min
121
The Gift
In this special Holiday Edition, we uncover an incredible gift to sound and research.
21 min
122
The Bleeps, the Sweeps, and the Creeps!
We explore user interface sounds.
22 min
123
Let It Beep
Who was behind the infamous Mac sounds that have become part of your daily routine?
16 min
124
Disney Parks
How does sound design shape our theme park experience?
19 min
125
Spooky Sounds
How does Hollywood create the terrifying sounds in our favorite scary movies, and why does our brain react to those sounds with fear?
23 min
126
Acoustical Umbilical Cord
Why do we cry? ...and how do our tears in adulthood make us distinctively human?
20 min
127
Level Up
Games are often defined by their graphics. How does sound for games work?
20 min
128
Watergate
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?
23 min
129
Sonic Seasoning
How does our sense of hearing affect our taste buds?
16 min
130
Fight or Flight
Does flying make you nervous? You’re not alone. Dive into the psychological aspects of how sound can trigger these fears, and find out what all of those sounds really are.
23 min
131
Sound Firsts
What are the oldest sound recordings in history?
26 min
132
Noise Pollution
Airplanes, construction, motorcycles - How have these everyday sounds affected our lives and what are the environmental and health repercussions?
17 min
133
20,000 dBs Under the Sea
How has increased ocean traffic affected underwater life? ...and what can we do to reverse these effects?
21 min
134
Evolution of Accents
You may not realize it, but your accent is a window to who you are and where you come from. How do accents evolve?
23 min
135
Forensic Audio
Deciphering audio has become crucial to solving cases, but how do specialists interpret audio evidence?
15 min
136
The Wilhelm Scream
A history of the most iconic scream in movie history that you’ve definitely heard, but might not have heard of.
17 min
137
Voice Acting
Who are the voices behind our favorite cartoon characters and commercials? Take a look behind-the-scenes of voice acting.
16 min
138
Hearing Loss
As we age our hearing naturally diminishes, but what other factors are causing our hearing to disappear? Plus, take an informal hearing test.
17 min
139
The Good, the Bad & the Irritating
Ever wonder why certain sounds make us cringe while others are soothing? Find out why we consider some sounds “good” and some “bad”.
17 min
140
Foley
What is Foley and how does it make our movie listening experience more realistic?
14 min
141
Space
What do other planets in our solar system sound like to our ears?
19 min
142
Dolls That Talk... And Some That Listen
Why have humans been so fascinated in re-creating toy versions of ourselves? Talking dolls have been around for over 100 years. Take a look at the evolution of how that came to be… and why they are so creepy.
14 min
143
Cars
Discover how car companies are enhancing every aspect of your vehicle’s sound to provide the ultimate driving experience.
14 min
144
Audio Descriptions
Ever wonder how the visually impaired are able to enjoy their favorite movies? Discover how technology has been able to make this possible.
12 min
145
Movie Soundtrack
What goes into making a movie soundtrack? Take a look behind the scenes with the sound designers that make your movies sound perfect.
14 min
146
From Analog to Digital
What did we lose when we switched from analog to digital?
14 min
147
Sound of Extinction
We've grown accustomed to the everyday sounds we experience; cell phones ringing, cars idling, Facebook messaging. What about the sounds that we've forgotten about, the sounds we’ve lost?
14 min
148
Mystery Hum
There’s a hum emanating from an island in Detroit that is so loud it disturbs the residents of Windsor, ON. The hum has caused so much discomfort and annoyance that a film crew decided to investigate the cause.
10 min
149
8-bit
8-bit audio defined countless childhoods. How did early sound artists and composers create such iconic sounds using the most primitive game technology?
12 min
150
NBC Chimes
The now iconic NBC Chimes were originally created to solve a small problem. Where did these three notes come from?
12 min
151
Siri
Who is the person behind the voice of Siri? ...and how was the world's first virtual personal assistant developed?
11 min