Ashly LIMITER/COMPRESSORS CL-50E Manuel du propriétaire - Page 7
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Comparison of the dvnamic range of several common audio svstems.
At the other end of the loudness spectrum, the limitation on dynamic
range is usually distortion, either in the form of amplifier overload or tape
saturation. In most transistorized equipment, the transition from clean,
undistorted operation to severe distortion is very abrupt. Therefore, it is
common practice to operate a piece of equipment at a level that is somewhat
below the distortion point, leaving a margin of safety for unexpected,
transient volume peaks in the music. This safety margin is known as
headroom, and may range
from 10 to 25 dB. Lowering
our standard
operating level to leave ourselves some headroom helps prevent distortion,
but at the same time it moves our average program level closer to the noise
floor, thereby compromising signal-to-noise performance. It becomes
apparent that to get the most out of an audio system, you have to keep your
standard operating level as high as possible without risking distortion.
CLIPPING
nt Distortion Occurs Above This Level
The useful dynamic range of any piece
of audio
equipment
15 lmited by noise ard distortion. ey
Gain Riding
What Compressors
and Limiters Do
Limiti