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Sound is Vibration, Vibration is Sound...

Knowing a little bit about the physics of sound will help us lay a foundation for audio engineering

Douglas Boulware

on 4 October 2012

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Transcript of Sound is Vibration, Vibration is Sound...

Sound and Hearing Sound Waves Vibrating a Steel Plate 1. The sound wave
enters the ear and
make the eardurm
vibrate. The Human Ear 2. The eardrum vibrates tiny bones inside the ear canal called the malleus, the incus, and the stapes. Sound waves exist as variations of pressure in a medium such as air. They are created by the vibration of an object, which causes the air surrounding it to vibrate. The vibrating air then causes the human eardrum to vibrate, which the brain interprets as sound. 3. The bones cause fluid in the cochlea to move tiny hair follicles, which send electric pulses through nerve endings that interpreted by the brain. Human Hearing Sound waves are measured in cycles per second. The amount of cycles per second, or frequency, is referred to as a unit called Hertz, (abr. Hz) named after the physicist Heinrich Hertz. The frequency of cycles per second, or Hz, in other words, the speed at which a sound vibrates determines its perceived pitch. The lower the frequency, the lower the pitch. The higher the frequency, the higher the perceived pitch. Assignment :

250 - 300 words explaining the principles of sound and why you think it is important to know this as an audio engineer. Links http://www.mediacollege.com/audio/01/sound-waves.html




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