Eq - Compressor - ENSONIQ DP/4 Musician's Manual

Section 4 - Algorithms
EQ - COMPRESSOR
114
00 - EQ-Compressor combines an EQ with a full feature compressor. For high compressor
ratios this algorithm functions as a limiter. This algorithm operates by compressing (attenuating)
signals above the threshold and passing the signals below the threshold. For higher ratios and
lower thresholds, this algorithm can be used to create sustain. EQ exists in both signal and side
chain paths, in contrast to the Expander which has filtering in only the side chain path.
Signal Level
-----""'Attenuate
Threshold
1-------------
- - - - -....
~
Pass
Time
The parameters available for this algorithm are:
01- Mix
02-Volume
See the descriptions under the Mix and Volume Parameters, in the beginning of this section. We
recommend a setting of 99.
03 - Compressor Gain
Range: -48 to +48 dB
This parameter boosts the compressed signal level.
04 - Compressor Ratio
Range: 1:1 to 40:1, infinity
This parameter sets the amount of compression. The range is based on decibels (dB) above the
threshold. If this is set to 4:1 for example, it will compress changes in signals above the threshold
by one quarter. When this is set to infinity, it acts as a limiter.
05 - Compressor Threshold
Range: -96 to +00 dB
This parameter sets the threshold level. Signals that exceed this level will be compressed, while
signals that are below will be unaffected. To tum off the compressor, set the level to 00 dB.
06 - Gain Change
Range: N/A
This read only parameter displays a gain reduction meter.
07 - Comp Attack
Range: 50/lS to 100ms
Determines the attack rate after the initial signal has been detected and before the compression
takes affect.
08 - Comp Release
Range: 1 ms to 10.0s
Determines how long it takes for the compression to be fully deactivated after the input signal drops
below the threshold level. This is generally chosen longer than the attack time (parameter 06).
ENSONIQ DP/4 Musician's Manual