Yamaha FX900 - Manual (Page 20)

7. The Effects and their Parameters
■ DYN (Dynamic) GROUP
• CDE — Compressor/Distortion/Equalizer
This effect actually combines a versatile compressor, distortion, and three-band equalization in a single effect stage.
COMPRESSOR
THR RAT ATK REL
-20 1/« 5.0 .20
DST TRG LPF LVL
150 -45 THRU -10
LoG MiG MiP HiG
-7 + 2 2.2k 0
Compressor
The compressor produces sustain or simple "smoothing" by
compressing the signal so that high levels are suppressed
while low levels are effectively boosted. The use of
compression before other effect stages is particularly
effective because it limits the signal to a dynamic range that
results in the best sound with the subsequent effects.
THR fThreshold: -42 — 0 dBi
Sets the compressor threshold level. Signal levels exceeding
the threshold level will be compressed while those below the
threshold level will be unaffected.
RAT fRatIo: 1/2.1/3.1/4.1/6.1/8.
This parameter sets the degree of compression. A
compression ratio of 1/2, for example, compresses signals
above the threshold level to one-half their original amplitude.
A setting of I/»« produces almost total compression,
producing the same signal level for all signals above the
threshold level and therefore the greatest degree of sustain.
Determines how long it takes for compression to begin after
an input signal is detected. Higher values produce a longer
attack time, allowing more of the natural attack of the input
signal to come through. This parameter is particularly useful
if, for example, you want to retain a sharp attack while
increasing sustain.
REL fRelease: 0.01 — 2.0 sect
Determines how long it takes for the compression to be fully
released after the input signal drops below the threshold
level. This parameter can be used to eliminate unnatural level
variations that can occur if the compression is suddenly
released below the threshold.
-------- Original Signal.
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