Symetrix 562E, Руководство пользователя

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562E
5
(dB)
THRESHOLD
ABOVE
BELOW
0
TI0N
dB)
-40 +20 A
CHANNEL 1
TIME EX
500ms
HOLD
TIME
ATTACK
TIME
60ms 1 Sec
RELEASE
2.5 Sec 4 Sec 300ms 50ms 30ms AUTO
GATE RANGE
EXPANDER RATIO
0
E
1:3 Sec 80dB
(dB)
THRESHOLD
ABOVE
BELOW
-10
30
X
12
3
REDUCTI0N
GAIN (dB)
-40 +20
60
F
G
AIN
R
EDUCTION
LED display - The G
AIN
R
EDUCTION
display
indicates how much the expander/gate has reduced the level
of the input signal.
A
BOVE
/B
ELOW
LED display - The A
BOVE
LED indicates that
the input signal is above threshold. The B
ELOW
LED indicates
that the input signal is below threshold.
G
ATE
R
ANGE
/E
XPANDER
R
ATIO
control - This control determines the
amount of attenuation that occurs during gating or expansion of the input
signal. For gating, use the settings from 0 (twelve o’clock) to 80dB
(counterclockwise). These settings define the number of dB below unity
gain that the gated signal will be dropped, when gating occurs. For
expansion, use the settings from 0 (actually 1:1, at twelve o’clock) to 1:3
(clockwise). These settings define how much the output level will change
in relation to changes in the input level. For example, at the 1:3 setting, a
5 dB drop below threshold in the input signal would result in a 15dB drop
in the output signal. When this control is set to twelve o’clock, you will
not have any expander or gate action, because the twelve o’clock position
corresponds to 0dB change for gating, and to a 1:1 ratio (change in input equals change in
output) for expansion.
A
TTACK
T
IME
control - Determines the speed at which the
expander/gate reaches zero attenuation when the input
signal rises above threshold. The “A
UTO
” A
TTACK
T
IME
setting is meant to be used in conjunction with the 562E’s
W
INDOW
A
DVANCE
feature, to give you an effective attack
time of zero.
H
OLD
T
IME
control - Determines the amount of time
that the gate continues to stay open (the amount of
time that the gate continues to pass signal at zero
attenuation) after the input signal has fallen below
threshold. When the audio source is speech, use long
H
OLD
T
IME
settings to prevent the gate from closing during short pauses between words.
R
ELEASE
T
IME
control - Determines the speed at which the expander/gate closes (i.e. returns to
full attenuation) when the input signal falls below threshold, at the end of the H
OLD
T
IME
.
The Expander/Gate Controls
T
HRESHOLD
control - Sets the signal level below which the expander/
gate begins to operate. When the input signal falls below the level
indicated by the T
HRESHOLD
control, the expander/gate begins reducing
the gain. The G
AIN
R
EDUCTION
LED display indicates how much the
expander/gate has reduced the gain.