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Sound (Audio file formats (MP3, AAC, WMA, FLAC, ALAC, WAV, AIFF, PCM),…
Sound
What is sound?
Sound is created by a vibrating object. Sound travels as a wave through a medium, for example, a liquid (such as water), a solid (such as the seafloor), or a gas (such as air).
In human physiology and psychology, sound is the reception of such waves and their perception by the brain.
Humans can hear sound waves with frequencies between about 20 Hz and 20 kHz. Sound above 20 kHz is ultrasound and below 20 Hz is infrasound. Different animal species have varying hearing ranges
Sound can also be propelled through water by small variations in the water pressure. The human ear is not suited to this, but a whale has excellent underwater hearing .
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