GATE AREA
A noise gate is a signal processor that turns off or
significantly attentuates the audio signal passing
through it when the signal level falls below a user
adjustable threshold.
(6) THRESHOLD (no gating to -10 dB)
When it is pushed off, all signals are allowed. Turn-
ing it clockwise, only signal over the threshold is
allowed to limit the noise signal level. How to set a
proper gate level for most applications? Turn off the
GATE Threshold, turn on all instruments hooked to
this unit but no input is allowed. Increase the
Threshold, the red GATE LED (#15) comes on. This
is helpful in removing hiss from tape, guitar amps
etc.
(7) RATE (0.02sec to 2sec)
This control sets the interval of the gate time and
thus creates a soft cut to noise. FIGURE C explains
the signal cut responding to different RATE settings.
Different settings create different signal cut effects.
(8) (a) FILTER ON/OFF SWITCH ,
(b) FILTER SETTING (35 Hz-4K Hz)
When FILTER ON/OFF switch(#8A) is pushed down
( at ON position), the FILTER SETTING CONTROL
(#8B) allows passes of some signal depending its
setting position. For example, if the FILTER ON/
OFF switch is at "ON" position, and the filter setting
control positions at 35Hz, it allows signal between
30 Hz to 40 Hz to pass thru.
MASTER AREA
(9) PEAK-RMS
In peak mode, the ATTACK/RELEASE controls in
COMPRESSOR/LIMITER area decides the com-
pression start and release interval. In RMS mode,
it is pre-factory set.
(10) HARD KNEE-SOFT KNEE
In conjunction with ATTACK/RELEASE time
control, the HARD KNEE creates a harsh com-
pressed signal, while the SOFT KNEE creates a
smooth compressed signal. FIGURE D thereun-
der illustrates signals created by HARD KNEE
and SOFT KNEE and the influences of ATTACK
and RELEASE time setting to the signal curve.
(11) STEREO LINK-DUAL LINK
At STEREO LINK, CHA controls both channels.
At DUAL MONO LINK, CHA & CHB works
independently.
(12) BYPASS-COMP
At BYPASS mode, the input signal sends out di-
rectly and is unaffected by the controls' settings.
Input signal is equal to the output signal. At
COMP mode, all input signals are affected by
this machine's factory presetting.
This gives an easy and quick comparison be-
tween unprocessed and processed signals.
(13) IN/OUT LED DISPLAY (-25 to +4 dB) AND
CONTROL SWITCH
When the in/out switch is at "IN" position, the
LED DISPLAY indicates the INPUT level. When
the switch is in "OUT" position, it indicates the
OUTPUT level.
(14) GAIN REDUCTION (-30 to -1 dB)
It indicates the compressed dB quantity.
(15) GATE LED
This LED lights up when NOISE GATE is on pro-
cessing and thus no signal comes in ; the LED
turns off when there is signal passing through.
(16) POWER ON/OFF SWITCH
Two guesses. Push down to turn on the power.
PCL 3200
5
output level
output level
COMPRESSOR/LIMITER
Gate
Attack
V
t
Release
Rate
+ 10 dB
+ 5 dB
- 10 dB
- 15 dB
- 25 dB
- 30 dB
- 45 dB
OFF
FIGURE D.
FIGURE C.
Input level
Input level
Hard Knee
Soft Knee