Yamaha SPX50D - Manual (Page 16)

28. ADR-Noise Gate
This program uses a “gate” to pass or shut off the input signal
in a number of ways. It can be used to pass just a short seg­
ment of a longer input signal, or it can be set up to pass only
signals that exceed a specified level. In the latter case this
program functions as a “noise gate.” It is also possible to cre­
ate reverse gate type effects in which the gain increases
gradually after the effect is triggered.
100 %
(TIME)
Trigger Level (TRG. LEVEL): 1—100
Determines the level of the input signal required to trigger
“opening” of the gate. At 100 only very high-level input sig­
nals will trigger the gate, while at 1 even the tiniest input
signal will trigger the gate.
Hold Time (HOLD): 1 — 30,000 milliseconds
Determines how long the gate stays open, allowing the sig­
nal to pass at the DECAY LEVEL, after the first decay and
prior to beginning of the RELEASE TIME.
Release Time (RELEASE): 5 — 32,000 milliseconds
Determines how long it takes for the gate to close fully after
the HOLD TIME has ended.
MIDI Trigger (MIDI TRG.): OFF, ON
When this parameter is turned ON, a KEY ON EVENT mes­
sage .from an external MIDI keyboard can be used to trigger
the gate. A KEY ON EVENT message is transmitted when­
ever a note on a MIDI keyboard is played.
NOTE: This effect can also be triggered by a footswitch
plugged into the rear-panel MEM./TRG. FOOT SW
jack if the front-panel TRIGGER button LED is lit
(press the TRIGGER button to activate or de-activate
the footswitch trigger function).
Trigger Delay (TRG. PLY): -100 — +100 milliseconds
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 is delayed so that, effec­
tively, the gate opens before the signal appears.
Trigger Mask (TRG. MSK): 5 — 32,000 milliseconds
This parameter makes it impossible to re-trigger the gate
function until the programmed time has elapsed.
Attack Time (ATTACK): 5 — 32,000 milliseconds
Determines how long it takes for the gate to open fully from
the time it begins to open.
Decay Time (DECAY): 5 — 32,000 milliseconds
Determines the length of time it takes for the gate envelope
to fall to DECAY LEVEL after it is fully open.
Decay Level (DECAY LVL): 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.
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