Audio Chapter 2

Audio Chapter 2 - Fundamentals for Audio Engineering Chapter 2 Sound and Hearing Examination of sound can be divided into four areas Basics of

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Fundamentals for Audio Engineering Chapter 2: Sound and Hearing Examination of sound can be divided into four areas: Basics of sound Characteristics of ear How the ear is stimulated by sound Psychoacoustics of hearing Basics of Sound Sound pressure waves pg 43 Longitudinal waves : are like a 3-dimensional version of the ripples which travel away from a stone dropped…. Transverse waves: Compression Rarefaction Wave propagation Sound arrives at the ear in the form of periodic variations in atmospheric pressure called (sound- pressure waves) – the changes in pressure heard by the ear are too small in magnitude and fluctuate too rapidly When the balloon is popped begin to exert an outward force on their neighbors in an effort to move toward areas of lower pressure. When the neighboring set of molecules has been compressed, they will continue to exert an outward force on the next set of lower pressured neighbors in an outward motion that continues until the molecules have used up their energy in the form of heat. As a vibrating mass moves outward from its normal resting state, it squeezes air molecules into a compressed area, away from the sound source. This causes the area being acted on to have a greater than normal atmospheric pressure. (Compression process) As the vibrating mass moves inward an area with lower-than-normal atmospheric pressure will be created (rarefaction process) - Only the sound wave itself moves through the atmosphere in the form of higher pressure compression waves that continue to push against areas of lower pressure (in outward direction). The outward pressure motion is known as
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This note was uploaded on 03/14/2012 for the course AUDIO 0101-408-0 taught by Professor Oliver during the Spring '12 term at RIT.

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Audio Chapter 2 - Fundamentals for Audio Engineering Chapter 2 Sound and Hearing Examination of sound can be divided into four areas Basics of

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