Question 1

The smallest change in level that most people can hear is __________.&#10;A) 10 dB&#10;B) 0 dB&#10;C) 1 dB&#10;D) 3 dB

Accepted Answer

The smallest change in level that most people can hear is typically 1 dB. A change of 3 dB is perceived as a significant change in loudness, and a change of 10 dB is perceived as a doubling or halving of loudness. However, the question asks for the smallest change most people can hear, and that is 1 dB. A change of 0 dB would be no change at all.

Question 2

A sound that is twice as loud is _________ higher in level.&#10;A) 6 to 10 dB&#10;B) 2 dB&#10;C) 10 dB&#10;D) 20 dB

Accepted Answer

A sound that is perceived as twice as loud is typically about 6 to 10 dB higher in level due to the logarithmic nature of the decibel scale and human perception of loudness.

Question 3

A loud sound has ___________.&#10;A) a high LSL.&#10;B) a high frequency.&#10;C) a high voltage.&#10;D) a high SPL.

Accepted Answer

SPL stands for sound pressure level, which is a measure of the amplitude of sound waves. Therefore, a loud sound has a high SPL.

Question 4

If dBV is a measure of level, what is change in level?&#10;A) delta dBV&#10;B) dB C-weighted&#10;C) dB&#10;D) dB1/dB2

Accepted Answer

The answer of If dBV is a measure of level,...

Question 5

In balanced recording equipment, 0 VU corresponds to ______________.&#10;A) 0 dBV&#10;B) 0 dBm&#10;C) +4 dBm&#10;D) +4 dBV

Accepted Answer

In balanced recording equipment, 0 VU corresponds to +4 dBm.

Question 6

What might happen if you connect a +4 dBu output to a -10 dBV input?&#10;A) Signal loss.&#10;B) Nothing.&#10;C) Noise.&#10;D) Distortion.

Accepted Answer

The answer of What might happen if you connect a...

Deck 22: Appendix A: DB or Not DB