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Unformatted text preview: b )(t/2)cos(w a +w b )(t/2) Intensity is proportional to Y 2 (t) which goes through two maxima and two minima in 1 cycle, therefore the beat frequency is ( a b ) You hear a sound with a frequency of 256 Hz. The amplitude of the sound increases and decreases periodically: it takes 2 seconds for the sound to go from loud to soft and back to loud. This sound can be thought of as a sum of two waves with frequencies A. 256Hz and 2 Hz B. 254Hz and 258Hz C. 255Hz and 257Hz D. 255.5Hz and 256.5 Hz E. 255.75 Hz and 256.25 Hz...
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This note was uploaded on 01/27/2012 for the course PH 2233 taught by Professor Dipinkardutta during the Spring '11 term at Mississippi State.
 Spring '11
 DipinkarDutta
 Physics

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