lesson 2 - how sound is measured and just what is dynamic range Flashcards
0 dBu is equal to ____ volts
.775
for musical application where high fidelity is the ultimate consideration how much headroom should be allowed
15-20 dB
headroom
the difference between nominal and highest levels in a program
how can a sound systems dynamic range be increased
increase max sound capacity or decrease ambient sound
gain
power increase of a signal
expressed in DB
why is headroom important
ability to handle loud program peaks
what devices permit compression to be applied above a set threshold
limiters
sound preassure
level measured per unit area of a particular location relative to sound source
0 dBv equals ________ volts
1
define volume
power level
what factors determine the head room needed
nature of program material
purpose
list two possible problems you could encounter if the dynamic range of the program material exceeds the dynamic range capability of the sound system
peak distortion
quiet passages not heard
what does the u in dBu stand for
unloaded
what is usually an adequate amount of headroom for most sound reinforcement systems
10dB
what does signal to noise ratio represent
difference between nominal level and noise floor
