OPTIMOD 6300 DIGITAL
OPERATION
3-35
AGC Idle Gain
on page 3-36 explains how the AGC gate’s no-signal gain is deter-
mined.
The multiband silence gate causes the gain reduction in bands 2 and 3 of the multi-
band compressor to move quickly to the average gain reduction occurring in those
bands when the gate first turns on. This prevents obvious midrange coloration un-
der gated conditions, because bands 2 and 3 have the same gain.
The multiband gate also independently freezes the gain of the two highest fre-
quency bands (forcing the gain of the highest frequency band to be identical to its
lower neighbor), and independently sets the gain of the lowest frequency band ac-
cording to the setting of the
DJ
B
ASS
boost control (in the Equalization screen).
Thus, without introducing obvious coloration, the gating smoothly preserves the av-
erage overall frequency response “tilt” of the multiband compressor, broadly main-
taining the “automatic equalization” curve it generates for a given piece of pro-
gram material.
If the
MB
G
ATE
T
HR
(Gate Threshold) control is turned
O
FF
, the
DJ
B
ASS
control is disabled.
AGC B CPL
(“AGC Bass Coupling”) control clamps the amount of dynamic bass boost
(in units of dB) that the AGC can provide. (In V1.0, the unit of measure was percent.)
The AGC processes audio in a master band for all audio above approximately 200 Hz
and a bass band for audio below approximately 200 Hz. Starting with V1.1 software,
the AGC Master and Bass compressor sidechains operate without internal coupling.
The gain reduction in the Bass audio path is either the output of the Bass compres-
sor sidechain or the output of the Master band sidechain. The
AGC
B
ASS
C
OUPLING
control sets the switching threshold. For example, if the
AGC
B
ASS
C
OUPLING
control
is set to 4 dB and the master gain reduction is 10 dB, the bass gain reduction cannot
decrease below 6 dB even if the gain reduction signal from the Bass compressor
sidechain is lower. However, the audio path bass gain reduction can be larger than
the master gain reduction without limit. In the previous example, the bass gain re-
duction could be 25 dB
The normal setting of the AGC
B
ASS
C
OUPLING
control is 0 dB, which allows the AGC
bass band to correct excessive bass as necessary but does not permit it to provide a
dynamic bass boost.
Note that the operation of this control was changed in 6300 V1.1 software to work
as explained above. You may have to tweak this control to achieve the same bass
balance that you had previously with V1.0 software.
AGC METR (“AGC Meter Display”)
determines what signal the front-panel AGC
meter displays.
M
ASTER
displays the gain reduction of the Master (above-200 Hz)
band.
D
ELTA
displays the difference between the gain reduction in the Master and
Bass bands. Full-scale is 25 dB gain reduction.
Although it is located in the Full Modify screen (to make it easy for a preset devel-
oper to switch meter modes), this control is
not
part of the active preset and its set-
Содержание OPTIMOD 6300
Страница 1: ...Operating Manual OPTIMOD 6300 Digital Multipurpose Audio Processor Version 1 1 Software ...
Страница 7: ...Operating Manual OPTIMOD 6300 Digital Multipurpose Audio Processor Version 1 1 Software ...
Страница 22: ......
Страница 48: ......
Страница 94: ...2 46 INSTALLATION ORBAN MODEL 6300 ...
Страница 118: ......
Страница 200: ......
Страница 214: ......
Страница 236: ...6 22 TECHNICAL DATA ORBAN MODEL 6300 CONTROL BOARD PARTS LOCATOR ...
Страница 242: ...6 28 TECHNICAL DATA ORBAN MODEL 6300 I O DSP BOARD PARTS LOCATOR ...
Страница 252: ...6 38 TECHNICAL DATA ORBAN MODEL 6300 FRONT VIEW REAR VIEW FRONT PANEL PARTS LOCATOR DIAGRAM ...
Страница 255: ...OPTIMOD 6300 DIGITAL TECHNICAL DATA 6 41 ...