Compressor - Yamaha SPX90 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
signal.
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.
18