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01 Thresholds of audibility B and W
Course: GM 4068, Fall 2009School: East Los Angeles College
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Word Count: 108
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of Thresholds audibility 160 MAF MAP Threshold of discomfort Threshold of tickle Threshold of pain 140 120 100 80 dB SPL 60 40 20 0 -20 -40 31 63 125 250 500 1000 2000 4000 8000 16000 Frequency (Hz) dd80a6c7f9af0b7a5da9c40fdfad6e89cab49e6b.xls Page 1 of 3 05/16/2009 Equal loudness contours 160 140 120 100 80 MAF Threshold of discomfort Threshold of tickle Threshold of pain 40 dB 100 dB dB...
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of Thresholds audibility
160
MAF
MAP
Threshold of discomfort
Threshold of tickle
Threshold of pain
140
120
100
80
dB SPL
60
40
20
0
-20
-40 31 63 125 250 500 1000 2000 4000 8000 16000
Frequency (Hz)
dd80a6c7f9af0b7a5da9c40fdfad6e89cab49e6b.xls
Page 1 of 3
05/16/2009
Equal loudness contours
160 140 120 100 80
MAF Threshold of discomfort Threshold of tickle Threshold of pain 40 dB 100 dB
dB SPL
60 40 20 0 -20 -40 31 63 125 250 500 1000 2000 4000 8000 16000
Frequency (Hz)
dd80a6c7f9af0b7a5da9c40fdfad6e89cab49e6b.xls
Page 2 of 3
05/16/2009
Frequency 63 31 125 250 500 1000 2000 4000 8000 16000
MAF 58 46 36 27 19 15 12 10 8 6 3 1 0 -3 -7 8 10 11 22
MAP
31 25 19 16 14 12 10 11 12 9 10 17 19 23 37
40 dB 75 68 60 54 48 42 39 36 34 36 39 43 40 37 38 42 50 48 52
100 dB 114 110 107 101 98 97 98 99 100 100 100 100 100 98 96 100 113 111 115
Threshold of Threshold of Threshold of discomfort tic...
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