FXAlg #957: Gate ¥ FXAlg #958: Super Gate
Algorithm Reference-157
Threshold
The signal level in dB required to open the gate (or close the gate if Ducking is on).
Ducking
When set to ÒOffÓ, the gate opens when the signal rises above threshold and closes when
the gate time expires. When set to ÒOnÓ, the gate closes when the signal rises above
threshold and opens when the gate time expires.
Retrigger
If Retrigger is ÒOnÓ, the gate timer is constantly restarted (retriggered) as long as the
side chain signal is above the threshold. The gate then remains open (assuming Ducking
is ÒOffÓ) until the signal falls below the threshold and the gate timer has elapsed. If
Retrigger is ÒOffÓ, then the gate timer starts at the moment the signal rises above the
threshold and the gate closes after the timer elapses, whether or not the signal is still
above threshold. With Retrigger off, use the Env Time to control how fast the side chain
signal envelope drops below the threshold. With Retrigger set to off, the side chain
envelope must fall below threshold before the gate can open again. [Super Gate only]
Env Time
Envelope time is for use when Retrigger is set to ÒOffÓ. The envelope time controls the
time for the side chain signal envelope to drop below the threshold. At short times, the
gate can reopen rapidly after it has closed, and you may Þnd the gate opening
unexpectedly due to an amplitude modulation of the side chain signal. For long times,
the gate will remain closed until the envelope has a chance to fall, and you may miss
gating events.
Gate Time
The time in seconds that the gate will stay fully on after the signal envelope rises above
threshold. The gate timer is started or restarted whenever the signal envelope rises
above threshold. If Retrigger is On, the gate timer is continually reset while the side
chain signal is above the threshold.
Atk Time
The time for the gate to ramp from closed to open (reverse if Ducking is on) after the
signal rises above threshold.
Rel Time
The time for the gate to ramp from open to closed (reverse if Ducking is on) after the
gate timer has elapsed.
Signal Dly
The delay in milliseconds (ms) of the signal to be gated relative to the side chain signal.
By delaying the main signal, the gate can be opened before the main signal rises above
the gating threshold.
Super Gate:
SCBassGain
The amount of boost or cut that the side chain bass shelving Þlter should apply to the
low frequency signals in dB. Every increase of 6 dB approximately doubles the
amplitude of the signal. Positive values boost the bass signal below the speciÞed
frequency. Negative values cut the bass signal below the speciÞed frequency.
SCBassFreq
The center frequency of the side chain bass shelving Þlters in intervals of one semitone.
SCTrebGain
The amount of boost or cut that the side chain treble shelving Þlter should apply to the
high frequency signals in dB. Every increase of 6 dB approximately doubles the
amplitude of the signal. Positive values boost the treble signal above the speciÞed
frequency. Negative values cut the treble signal above the speciÞed frequency.
SCTrebFreq
The center frequency of the side chain treble shelving Þlters in intervals of one semitone.
SCMidGain
The amount of boost or cut that the side chain parametric mid Þlter should apply in dB
to the speciÞed frequency band. Every increase of 6 dB approximately doubles the
amplitude of the signal. Positive values boost the signal at the speciÞed frequency.
Negative values cut the signal at the speciÞed frequency.
SCMidFreq
The center frequency of the side chain parametric mid Þlter in intervals of one semitone.
The boost or cut will be at a maximum at this frequency.
SCMidWidth
The bandwidth of the side chain parametric mid Þlter may be adjusted. You specify the
bandwidth in octaves. Small values result in a very narrow Þlter response. Large values
result in a very broad response.
