Kurzweil K2600 Musician’s Reference page 240

KDFX Reference
KDFX Algorithm Specifications
times, the signal may stay compressed well after the signal falls below threshold. At short release times,
the compressor will open up almost as soon as the signal drops.
For typical compressor behaviour, the attack time is considerably shorter than the release time. At very
short attack and release times, the compressor is almost able to keep up with the instantaneous signal
levels and the algorithm will behave more like distortion than compression. In addition to the attack and
release times, there is another time parameter: ÒSmth BandÓ. The smoothing parameter will increase both
the attack and release times, although the effect is signiÞcant only when its time is longer than the attack or
release time. Generally the smoothing time should be kept at or shorter than the attack time.
You have the choice of using the compressors conÞgured as feed-forward or feedback compressors. For
feed-forward, set the FdbkComprs parameter to ÒOutÓ; for feedback compression, set it to ÒInÓ. The feed-
forward conÞguration uses the input signal as the side-chain source. The feedback compressor on the
other hand uses the compressor output as the side-chain source. Feedback compression tends to be more
subtle, but you cannot get an instant attack.
The signal being compressed may be delayed relative to the side chain compression processing. The delay
allows the signal to start being compressed just before an attack transient arrives. Since the side chain
processing ÒknowsÓ what the input signal is going to be before the main signal path does, it can tame
down an attack transient by compressing the attack before it actually happens. This feature works whether
the side chain is conÞgured for feed-forward or feedback.
A meter is provided for each compression band to display the amount of gain reduction that is applied to
the signal as a result of compression.
P
Parameters
Page 1
In/Out
FdbkComprs
Signal Dly
Page 2
Atk Low
Rel Low
Smth Low
Page 3
Atk Mid
Rel Mid
Smth Mid
Page 4
Atk High
Rel High
Smth High
10-154
In or Out
In or Out
0.0 to 25.0 ms
0.0 to 228.0 ms
0 to 3000 ms
0.0 to 228.0 ms
0.0 to 228.0 ms
0 to 3000 ms
0.0 to 228.0 ms
0.0 to 228.0 ms
0 to 3000 ms
0.0 to 228.0 ms
Out Gain Off, -79.0 to 24.0 dB
Crossover1 16 to 25088 Hz
Crossover2 16 to 25088 Hz
Ratio Low 1.0:1 to 100.0:1, Inf:1
Thres Low -79.0 to 24.0 dB
MakeUp Low Off, -79.0 to 24.0 dB
Ratio Mid 1.0:1 to 100.0:1, Inf:1
Thres Mid -79.0 to 24.0 dB
MakeUp Mid Off, -79.0 to 24.0 dB
Ratio High 1.0:1 to 100.0:1, Inf:1
Thres High -79.0 to 24.0 dB
MakeUpHigh Off, -79.0 to 24.0 dB