Adr-Noise Gate - Yamaha SPX90 Operating Manual

This program feeds the reverb signal through a gate cir-
cuit, making it possible to output only a segment of a
longer reverb sound. Parameters provided for the reverb
portion of the signal are REV TIME, HIGH, DELAY, HPF
and LPF, while parameters for the gate portion are
HOLD TIME, RELEASE TIME, and MIDI TRIGGER.
1 . REVERB TIME (R/T). Range: 0.3 ~ 99.0 sec
2. HIGH (High Frequency Reverb Time Ratio
Range: 0.1 ~ 1.0
3. DELAY. Range: 0.1 ~ 50.0 msec
4 . HPF (High Pass Filter). Range: 32 Hz ~ 1.0 kHz,
THRU
5. LPF (Low Pass Filter). Range: 1.0 kHz ~ 11 kHz
All these parameters have the same function as
those of the REV programs. See page 10 for details.
6. TRIGGER LEVEL. Range: 0 ~ 100%
Determines the strength (amplitude) of the input
signal required to trigger opening of the gate. At
100%, only extremely high-level input signals will
trigger the gate, while at 0% even this slightest in-
put signal will trigger the gate.
7. HOLD TIME. Range: 1 ~ 30,000 msec
This parameter sets the amount of time the gate is
"open," allowing the reverb sound to come through.
8. RELEASE TIME. Range: 5 ~ 32,000 msec
This parameter determines the time it takes for the
gate to close completely after the HOLD TIME.
9. MIDI TRIGGER. Range: ON, OFF
When ON, a KEY ON signal from an external MIDI
keyboard can be used to trigger the R & G effect.
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ADR-NOISE GATE

This program uses a gate circuit to pass or shut off the
input signal in a number of ways. It can be used to pass
just a short segment of a longer input signal, or it can
be used to pass only signals that exceed a specific level
(noise-gate type operation). It is also possible to achieve
reverse gate effects in which the gain increases
gradually after the gate is triggered.
In addition to signal-level triggering, it is also possible
to trigger the gate via a footswitch connected to the
front-panel MEMORY TRIGGER jack when the FOOT
TRIGGER key LED is ON.
1. TRIGGER LEVEL. Range: 1 ~ 100%
Determines the strength (amplitude) of the input
signal required to trigger opening of the gate. At
100%, only extremely high level input signals will
trigger the gate, while at 0% even the slightest in-
put signal will trigger the gate.
2. TRIGGER DELAY. Range: – 100 ~ 100 msec
Produces a delay between the time at which the
gate is triggered and that at which it actually opens.
If a minus value is programmed, the input signal
itself is delayed so that, effectively, the gate opens
before the signal appears.
3. TRIGGER MASK. Range: 5 ~ 32,000 msec
This parameter makes it impossible to re-trigger the
gate function until the programmed time has
elapsed.
4. ATTACK TIME. Range: 5 msec ~ 32,000 msec
Determines how long it takes for the gate to open
fully from the time it begins to open.
5. DECAY TIME. Range: 5 msec ~ 32,000 msec
Determines the length of time it takes for the gate
to fall to DECAY LEVEL after it is fully open.