Threshold of pain 120 phons 120 1 100 100 |10-2 80 80 10-4 60 60 10–6 40 Threshold of hearing 40 10-8 20 20 10-10 | 10-12 50 100 500 1000 5000 10,000 Frequency (Hz) FIGURE 12-6 Sensitivity of the human ear as a function of frequency (see text). Note that the frequency scale is "logarithmic" in order to cover a wide range of frequencies. Sound level (dB) 20 Intensity (W/m²)
Threshold of pain 120 phons 120 1 100 100 |10-2 80 80 10-4 60 60 10–6 40 Threshold of hearing 40 10-8 20 20 10-10 | 10-12 50 100 500 1000 5000 10,000 Frequency (Hz) FIGURE 12-6 Sensitivity of the human ear as a function of frequency (see text). Note that the frequency scale is "logarithmic" in order to cover a wide range of frequencies. Sound level (dB) 20 Intensity (W/m²)
Chapter17: Astrobiology: Life On Other Worlds
Section: Chapter Questions
Problem 9P
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(I) A 5000-Hz tone must have what sound level to seem as loud as a 100-Hz tone that has a 50-dB sound level? (See Fig. 12–6.)
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