Science of Sound

Science of Sound - ScienceofSound: Chapter 1:

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Science of Sound:  Chapter 1: - Continuing sounds with slightly different vibration rates produces “beats”; sound gets louder as two  waves interfere continuously and discontinuously.                       440 + 439   1 beat/second - Multiplying vibration rate by 2 raises pitch on scale -Pythagoras finding: pleasant intervals have frequencies of: 2/1 , 3/2 , 4/3 , 5/4 , 6/5 , …. . - Transverse wave : point on a rope vibrates up and down as wave travels right Longitudal wave : points on spring vibrate parallel to direction in which sound wave travels -Sound wave in air: 20% oxygen, 80% nitrogen - compression : density and pressure are greater than they would be in the absence of sound Rarefactions : the density and pressure are reduced below their normal values - The typical atmospherical pressure is 14.7 lbs/in² -Distance air vibrates back and forth is 1/10 mm
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Science of Sound - ScienceofSound: Chapter 1:

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