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Unformatted text preview: (like 14.40): What are the sum and difference frequencies heard between A, 440 Hz and C, 523.25 Hz? a) 440.25 and 463.25 Hz; b) 183.25 and 663.25 Hz; c) 83.25 and 963.25 Hz; d) 773.25 and 93.25 Hz; e) 220 and 1046.50 Hz. Answer: Sum = 963.25 Hz, Difference = 83.25 Hz What frequencies will a spectrum analyzer report when the two notes are played simultaneously? a) 83.25, 440 523.25, and 963.25 Hz; b) 440 and 523.25 Hz; c) 440 and 223.25 Hz; d) 445, 657, and 923.25 Hz; e) 220, 440, 523.25 and 1046.50 Hz. Answer: Although the nonlinear ear may hear the sum and difference frequencies, the spectrum analyzer only detects the Fourier components of the sound which are at 440 Hz and 523.25 Hz....
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 Spring '04
 mile
 Standing wave, Hz

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