Auditory sensitivity

Question 1

What’s the reference PRESSURE for SPL?

Answer 1

.0002 dynes/cm2

Question 2

What’s the reference intensity?

Answer 2

10 (-12) watts/m2

Question 3

If I stand 3’ always and you hear me at 80dB SPL, then I move 6’ away, now you hear me at ___ ?

Answer 3

74dB SPL

Question 4

A 50ms tone at 500Hz is easier or harder to detect than a 300ms tone at 800Hz?

Answer 4

Harder due to time intensity trade off

Question 5

Based on the inverse square law you lose ___ dB every time distance is ______ :

Answer 5

6

Doubled

Question 6

A “pure tone” is always _______ :

Answer 6

Sinusoidal

Question 7

For a sinusoid, the peak amplitude is = to the instantaneous amplitude @ ____ :

Answer 7

90 degrees

Question 8

If a sawtooth wave has a f0 of 500Hz, provide the next 4

Answer 8

1000, 1500, 2000, 2500

Question 9

A sinusoid with a 5m wavelength will sound higher or lower pitched than a sinusoid with a 0.5m wavelength ?

Answer 9

Lower pitched because longer wavelengths = lower frequency