Decibel Flashcards
1
Q
What is a decibel?
A
A unit for expressing the ratio btw 2 physical values
2
Q
In audio, the values are usually powered to?
A
watts or volts
3
Q
In acoustics, the values change to?
A
micro pascals
4
Q
Relative decibels?
A
measure the proportional change btw two values
5
Q
Absolut decibels?
A
represent a comparative change from a known reference
6
Q
0dBu is
A
0.775 volts rms
7
Q
0dBV is
A
1v rms
8
Q
0dBW is
A
1 watt
9
Q
0dbSPL is
A
20 micro-pascals
10
Q
dB SPL
A
the standard descriptor for loudness
11
Q
dBW
A
the standard for pro audio amplifier power
12
Q
dBFS
A
metering system for digital recorder
13
Q
dBV
A
used in consumer or home studio
14
Q
dBu
A
the standard quantifier for pro audio
