sound reinforcement terms

Question 1

level

Answer 1

magnitude

Question 2

dBu

Answer 2

.775 volts

Question 3

dB

Answer 3

1/10th of a bell

Question 4

turnover frequency

Answer 4

the frequency at which the level has dropped 3 dB

Question 5

dBm

Answer 5

1 miliwatt

Question 6

acoustic gain

Answer 6

the difference between the level the listener hears with the system off and that which they hear with the system on

Question 7

input transducer

Answer 7

converts sound into audio signal

Question 8

output transducer

Answer 8

converts audio signal into sound

Question 9

volume

Answer 9

power

Question 10

critical distance

Answer 10

the distance from the acoustic center of the source to the point at which the intensity of the direct sound equals that of the reverberant field

Question 11

dB SPL

Answer 11

dB sound pressure level - the threshold of hearing for a young undamaged ear

Question 12

power

Answer 12

volume

Question 13

headroom

Answer 13

the difference between the nominal and highest levels in a program

Question 14

dBV

Answer 14

1 volt

Question 15

frequency response

Answer 15

relationship between devices input and output

Question 16

reverberation

Answer 16

the decaying of sound

Question 17

dynamic range

Answer 17

the difference between the loudest and quietest portions of a program

Question 18

gain

Answer 18

power increase of a signal