week 7b have to read this chapter of book

week 7b have to read this chapter of book - Physics 1240...

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Physics 1240 Thurs 2/23/10 Today: Human ear Next time: Hearing perception, virtual pitch Outline - Fletcher-Munson diagram - Audible range and hearing loss - The human ear – an amazing detector! - The function of the outer ear - The function of the middle ear - The function of the inner ear
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Loudness ( f, SIL ) --- Phons ( Hz, dB )
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Fletcher-Munson diagram Loudness ( f, SIL ) --- Phons ( Hz, dB )
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CQ 7.8 The volume of an amplifier is increased so that a quiet sound increases by a factor of 10,000 in intensity (measured in units W/m 2 ). How much does the SIL go up? A) 1000 dB B) 100 dB C) 40 dB D) 10 dB E) none of the above CQ 7.9 For the sound above, how will the quality of the sound change? A) the overall quality of the sound will not change B) it will be much quieter C) it will become more brassy or shrill D) the bass frequency range will sound too loud
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How loud is a 9000 Hz 40 dB pure tone? A) less than 32 phons
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week 7b have to read this chapter of book - Physics 1240...

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