AEQ
CAPITOL
Ultra-compact digital audio mixer
90
4.3.4.1. Advanced configuration of Compressor/Limiter.
From the initial screen of the pre-sets advanced information menu (“Digital Sound Processes”)
you can configure and activate/deactivate the Compressor/Limiter operation.
When you select the “Active” checkbox, the “
Configure
” button gets active and gives you
access to the graphic display where the Compressor/Limiter associated parameters can be
modified.
Dynamics processors are used to modify the dynamic ranges of an audio signal to adapt it to
specific needs or to produce certain sound effects. A compressor enables you to reduce the
dynamic range of the signal. Your purpose may be to adapt a signal with a very broad dynamic
range to a circuit that will not support such wide variations in level, or to generate a certain
sound in a signal.
The graph represents the variation produced in the different levels of the signal applied to this
function. On the horizontal axis are the input levels, while the vertical axis shows output levels.
The “Compressor/Limiter” function acts as a “constant gain” compressor; that is, below the
threshold, all input signals are amplified (or not amplified) equally, while above the threshold,
the input levels are reduced to a greater or lesser degree according to the compression ratio.
If the compression range selected is the maximum, the function will act as a limiter in such a
way that the signals that exceed the selected threshold at input will not exceed a certain level at
output. For example, with a threshold = 0 dB, a gain of 10 dB and a compression ratio of 1:50,
you will ensure that all the signals that exceed 10 dB at input will also be output at 10 dB, while
the signals that are below the threshold will have an overall gain of 10 dB.
The available controls are:
•
“THRESHOLD”: this is the threshold above which the compressor will act. Signal levels
that exceed this threshold will be affected by the compressor settings. The threshold
range varies from -42dB to +22dB.
