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1. If a sound of frequency 1000 Hz has intensity level 30 dB, what would be...

1. If a sound of frequency 1000 Hz has intensity level 30 dB, what would be the intensity level of sound frequency 50 Hz which appears to have equal loudness? (Answer= 60 dB)

2. Intensity of 30 dB, 1000 Hz sound= (Answer= 1.000 x 10-9 W/m^2)

*3. What is intensity (in W/m^2) of the equal loudness 50 Hz sound? (Answer is NOT 50.12 x 10^-12)

*4. What is the ratio of the pressure variation (in amplitude) of the equal loudness 50 Hz sound to the pressure variation of the 30 dB, 1,000 Hz sound? (Answer is NOT 0.224)

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