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16
ENGLISH
DCX NET series User manual
8)^Compressor
This is a group of 4 parameters (for each output channel) dedicated to the audio signal
compression:
- Threshold
A compressor reduces the level of an audio signal if its amplitude exceeds a certain
threshold. Threshold is commonly set in decibel (dB), where a lower threshold means a
larger portion of the signal is treated. When the signal level is below the threshold, no
processing is performed and the input signal is passed, unmodified, to the output.
Threshold timing behavior is subject to attack and release settings (see next point).
When the signal level goes above threshold, compressor operation is delayed by the
attack setting. For an amount of time determined by the release after the input signal
has fallen below the threshold, the compressor continues to be active.
- Attack and Release
A compressor may provide a degree of control over how quickly it acts. The attack is
the period when the compressor is decreasing gain in response to increased level at
the input to reach the gain determined by the ratio. The release is the period when the
compressor is increasing gain in response to reduced level at the input to reach the
output gain determined by the ratio.
- Ratio
The amount of gain reduction is determined by ratio: a ratio of 4:1 means that if input
level is 4 dB over the threshold, the output signal level is reduced to 1 dB over the
threshold. The gain and output level has been reduced by 3 dB.
The highest ratio of INF(∞):1 is often known as limiting and effectively indicates that
any signal above the threshold is brought down to the threshold level once the attack
time has expired.
The above parameters are grouped into a single screen as follows:
Out 1
R1Sec A05ms 4:1
+18dBu Comp
A blinking cursor will indicate which parameter is being changed.
Use any of the three encoders to change the values and the [ENTER Button] to confirm
and then skip to next parameter.