Compressor - Yamaha SPX90 II Operating Manual

6. DECAY LEVEL. Range: 0 ~ 100%
Determines the level at which the gate remains open
for the HOLD TIME. The lower the value the lower
the HOLD gate level.
7. HOLD TIME. Range: 1 msec ~ 30,000 msec
Determines how long the gate stays open, allowing
the input signal to pass.
8. RELEASE TIME. Range: 5 msec ~ 32,000 msec
Determines how long it takes for the gate to close
fully from the time it begins to close.
9. MIDI TRIGGER. Range: ON, OFF
When ON, a KEY ON signal from an external MIDI
keyboard can be used to trigger the gate.

COMPRESSOR

The COMPRESSOR effect reduces the level of the attack
portion of a music signal and keeps overall signal level
within narrow limits.
1. TRIGGER LEVEL. Range: 1 ~ 100%
Determines the strength of the attack signal required
to trigger the compressor effect.
2. TRIGGER DELAY. Range: — 100 ~ 100 msec
Produces a delay between the time at which the ef-
fect is triggered and that at which the compression
actually begins. If a negative value is programmed,
the input signal is delayed so that effectively, the
compression begins before the signal appears.
3. TRIGGER MASK. Range: 5 ~ 32,000 msec
This parameter makes it impossible to re-trigger the
compressor function until the programmed time has
elapsed.
4. ATTACK TIME. Range: 5 msec ~ 32,000 msec
Determines how long it takes until the HOLD level
(below) is reached after the effect is triggered.
5. HOLD TIME. Range: 1 msec ~ 30,000 msec
Determines how long the maximum compression ef-
fect is maintained after the ATTACK TIME has
elapsed.
6. HOLD LEVEL. Range: 0 ~ 100%
Determines the actual level to which all input signals
will be compressed during the HOLD TIME. The
smaller the value, the lower the level of the output
s i g n a l .
7. RELEASE TIME. Range: 5 msec ~ 32,000 msec
Determines how long it takes to return to normal
level once the HOLD TIME has elapsed.
8. MIDI TRIGGER. Range: ON, OFF
When ON, a KEY ON signal from an external MIDI
keyboard can be used to trigger the compressor
effect.
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