25 Randomly Cool Facts About Sound that you won’t Believe

Posted by , Updated on April 23, 2024

Our remarkable sense of hearing, which enables us to perceive sound, is noteworthy. Whether it’s melodious music that cheers our spirit or the loud noise of a car speeding by that signals danger, sound plays an essential role in our lives. Interestingly, the role of sound is not restricted to humans. For example, dolphins use sound for echolocation, helping them navigate their surroundings. Are you interested in discovering more fascinating insights about sound? Check out these 25 Surprising and Intriguing Facts About Sound (Prepare to Be Stunned by What Your Ears Can Accomplish!).


The bones of the middle ear - the hammer, anvil, and stirrup - help transform pressure waves into mechanical vibrations.

middle earSource: http://www.physicsclassroom.com/mmedia/waves/edl.cfm

Alarm systems transmit sound at around 1 to 3 kHz. That frequency range is both very sensitive for human ears and creates a black spot for our sound location ability.

home alarmSource: http://www.physics.org/featuredetail.asp?id=75

Musical sounds are uniform vibrations, while noises are irregular vibrations. Musical sounds distinguish themselves through pitch, loudness, intensity, quality, and timbre.

synthSource: http://www.encyclopedia.com/science-and-technology/physics/physics/sound

The speed of sound is about 1,130 feet per second in dry air at 68 degrees Fahrenheit.

machSource: http://www.bluebulbprojects.com/measureofthings/results.php?comp=speed&unit=fts&amt=1130&sort=pr&p=1

A healthy young human ear can hear all frequencies from 20 to 20,000 hertz.

EarSource: https://hypertextbook.com/facts/2003/ChrisDAmbrose.shtml

In contrast, a dolphin can hear and produce sounds up to 150 kHz which is 150,000 hertz. This means that there are several sounds dolphins make that humans can't even hear. They use different sounds regularly for echolocation.

Dark_DolphinSource: http://www.dolphincommunicationproject.org/index.php/the-latest-buzz/field-reports/bahamas-3/bahamas-2000/item/93032-how-well-can-dolphins-hear

People who have Superior Canal Dehiscence can experience a symptom where they hear their body sounds at high levels, including hearing their own eye movements.

Cochlear_implantSource: https://www.asha.org/PRPSpecificTopic.aspx?folderid=8589934662§ion=Signs_and_Symptoms

Due to the Doppler Effect, a musical piece traveling twice the speed of sound would be in correct time and tune but only backwards.

doppler effectSource: https://www.reddit.com/r/todayilearned/comments/2mggku/til_that_due_to_the_doppler_effect_a_musical/

Whether it's an orchestra or a heavy metal band playing music at 120 dB, both will undoubtedly damage your hearing.

orchestraSource: https://www.scholastic.com/teachers/articles/teaching-content/fun-sound-facts/

Since particles are closer together in water than air, sound can travel four times faster in water.

waterSource: https://www.sciencelearn.org.nz/resources/572-sound-on-the-move

Horror filmmakers use infrared sound to induce anxiety, sorrow, and even heart palpitations.

draculaSource: http://www.bbc.co.uk/arts/0/24083243

People hate the sound of their own voice on a recording because we hear ourselves differently in our own heads.

voiceSource: http://time.com/4820247/voice-vocal-cords/

Active noise-cancelling headphones use destructive interference to cancel out incoming sound, erasing the sound waves altogether.

headphonesSource: https://electronics.howstuffworks.com/gadgets/audio-music/noise-canceling-headphone3.htm

If you clap in front of Chichen Itza's El Castillo pyramid, the echo will sound like a chirping bird.

Chichen_Itza_El_CastilloSource: https://www.reddit.com/r/todayilearned/comments/2piehv/til_that_if_you_clap_your_hands_in_front_of/?ref=search_posts

Old television remotes used an aluminum rod and a hammer to make a sound above human hearing to change the channel or the volume.

zenithSource: http://www.pushclicktouch.com/blog/?p=107

Astronomers located a black hole 250 million light years away by making a B Flat note 57 octaves below middle C.

Black_Hole_MilkywaySource: https://www.nasa.gov/centers/goddard/universe/black_hole_sound.html

A British scientists discovered elephants are terrified of bee sounds and will flee when they hear them.

elephantsSource: http://www.bbc.com/news/science-environment-15836079

It's estimated that making a sound at 1,100 decibels would completely destroy the universe in a black hole.

universeSource: https://curiosity.com/topics/at-this-many-decibels-a-sound-would-destroy-the-universe-curiosity/

Because electric cars are very quiet, they are required to have artificial sounds for safety reasons.

electric carSource: https://www.theverge.com/2016/11/16/13651106/electric-car-noise-nhtsa-rule-blind-pedestrian-safety

Sound can't travel through space because there aren't any molecules to vibrate.

spaceSource: http://www.qrg.northwestern.edu/projects/vss/docs/space-environment/1-is-there-sound-in-space.html

In 1883, a volcanic eruption on the island of Krakatoa produced sound which shattered windows, shook homes, and were reported to be heard 160km away from the explosion. The atmospheric shock waves it created traveled 7 times around the Earth before it dissipated.

krakatoaSource: http://volcano.oregonstate.edu/historical-eruption-sounds

Pistol Shrimp produce an extremely loud pop to stun their prey. The pop sound reaches 218 decibels which is louder than a gun shot.

pistol shrimpSource: http://www.dailymail.co.uk/sciencetech/article-1085398/Deadly-pistol-shrimp-stuns-prey-sound-loud-Concorde-UK-waters.html

Blue whales can make deep sounds up to 188 decibels and can be heard 500 miles away.

humpback whaleSource: https://www.coolantarctica.com/Antarctica%20fact%20file/wildlife/whales/blue_whale.htm

Research in psychoacoustics helps us understand how sound affects our psychology and nervous system.

psychoacousticsSource: http://thepowerofsound.net/psychoacoustics-defined/

Even if you aren't recording sound on a video recording, researchers at MIT found they can recreate a voice solely by the small vibrations of the things in the video recording.

cameraSource: http://www.theskepticsguide.org/the-video-microphone-is-your-candy-wrapper-tattling-on-you

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