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Sunday 11 March 2018

Sound

Édouard-Léon Scott de Martinville made the oldest known recording of an audible human voice when he recorded himself singing "Au clair de la lune" on his phonautograph machine in 1860.

An early phonautograph (1859). 

If you yelled for 8 years, 7 months and 6 days, you would have produced enough sound energy to heat one cup of coffee.

In a study, the sound of someone vomiting was ranked number one most cringe-worthy sound ever. Microphone feedback was ranked number two.

Foley is the creation of everyday sound effects that are added to films and other media in post-production to enhance audio quality. Wagging an empty pair of gloves into a microphone, for example, can emulate the sound of a bird's wings flapping.


The majority of creepy sounds that you hear in horror films are made by a unique instrument called a waterphone.

Sound travels nearly five times faster underwater than it does in the air.

Sound forensics make it possible to reconstruct speech or other sound by watching leaves of a plant, earbud speakers or a potato-chip bag with a camera, even through soundproof windows.

The loudest undistorted sound possible on the Earth is 194 decibels. Above that threshold the sound waves become shockwaves.

If you were to produce a sound louder than 1,100 dB, you would create a black hole which would swallow up the Earth.

A sound produced on Earth sounds very different if produced on Mars. The composition and pressure of the Martian atmosphere distort sounds to a lower pitch.


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