Yamaha SPX90 II - Manual (Page 18)

REVERB and GATE GATE
This program feeds the reverb signal through a gate
circuit, 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. '
ADR-NOISE GATE
-(TIME)
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 in­
creases 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.
LEVEL = 100%
DECAY
LEVEL
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 ~ 1000.0 msec
4. HPF (High Pass Filter). Range: 32 Hz ~ 1.0
kHz, THRU
5. LPF (Low Pass Filter). Range: 1.0 kHz ~ 11
kHz, THRU
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 input
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.
-(TIME)
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 input
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.
17