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Audio fundamentals pt.2
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Formula for POWER in dBs:
A doubling of power results in ___ dB increase.
10log(P1/P2)
3 dB
Formula for VOLTAGE (pressure) in dBs:
Doubling voltage results in ___ dB increase
20log(V1/V2)
6 dB
What is the reference dB for POWER?
dBm
What is the reference dB for VOLTAGE?
dBu
dBFS refers to...
Decibels (below) Full Scale
What is the dB used as a reference level for consumer equipment specifications?
dBV
What is the PROFESSIONAL reference level?
What is the CONSUMER reference level?
+4dBu = 1.23 Volts
-10dBV
SPL stands for and is used for...
The threshold of hearing is at...
Sound Pressure Level
loudness measurements
0 dB SPL
Sound POWER is measured in...
Watts
Sound INTENSITY is measured in...
Watts per square meter
Sound INTENSITY and sound PRESSURE both increase and decrease by ___ dB with each doubling and halving.
6dB
What is White Noise?
What is Pink Noise?
Equal energy at all frequencies
Equal energy in all octaves
RTA stands for and shows...
Real Time Analyzer
Amplitude and frequency
ETC stands for and shows...
Energy Time CurveAmplitude and Time
Spectrograph shows...
Time, amplitude, and frequency
Dynamic Range is...
The range in dB between the lowest and highest amplitude
Headroom is...
The amount of dBs from signal level to distortion
What are the two types of meters?
Average reading
Peak reading
VU meters give a good approximation of...
0 VU =
Loudness
1.23 V at +4 dBu
Author
SeanHatfield
ID
274473
Card Set
Audio fundamentals pt.2
Description
Much sound
Updated
2014-05-15T03:03:50Z
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