Orban OPTIMOD 6300 Operating Manual page 201

OPTIMOD 6300 DIGITAL
control sets the expansion threshold in Bands 1-4, while the B5 D
D T
control (first introduced as part of V1.1 software) allows you to fine-
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tune the Band 5 downward expander's threshold by adding or subtracting an offset
from the setting of the MB D
noise reduction by setting these controls to a setting other than O
The single-ended noise reduction system combines a broadband downward ex-
pander with a program-dependent low-pass filter. These functions are achieved by
causing extra gain reduction in the multiband compressor. You can see the effect of
this extra gain reduction on the gain reduction meters.
Ordinarily, the gating on the AGC and multiband limiter will prevent objectionable
build-up of noise and you will want to use the single-ended noise reduction only on
unusually noisy program material. Modern commercial recordings will almost never
need it. We expect that its main use will be in talk-oriented programming, including
sports.
Please note that it is impossible to design such a system to handle all program mate-
rial without audible side effects. You will get best results if you set the MB D
E
control of the noise reduction system to complement the program mate-
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rial you are processing. The MB D
is noisy and lower when the input is relatively quiet. The best way to adjust the MB
D E
control is to start with the control set very high. Reduce the control
OWN XPANDER
setting while watching the gain reduction meters. Eventually, you will see the gain
increase in sync with the program. Go further until you begin to hear noise modula-
tion—a puffing or breathing sound (the input noise) in sync with the input program
material. Set the MB D
noise modulation. This is the best setting.
Obviously, the correct setting will be different for a sporting event than for classical
music. It may be wise to define several presets with different settings of the MB
D E
control and to recall the preset that complements the program ma-
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terial of the moment.
MB Attack / Release / Threshold
Full Name Advanced Name
MB REL Multiband Release
--- Speech Multiband Release
Bx (1-5) THR Bx Compression Threshold
--- Bx Speech Compression Thresh
--- Bx Attack
--- Bx Speech Attack
--- Bx Limiter Attack
--- Bx Delta Release
--- Bx Compression Ratio
--- Bx Knee
--- Transient Enhance
E
OWN XPAND control. Activate the single-ended dynamic
E
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E
OWN XPANDER control higher until you can no longer hear the
Table 3-10: MB Attack / Release Controls
.
FF
should be set higher when the input
Range
Slow, Slow2, Med, Med2, MFast, MFast2,
Fast
Slow, Slow2, Med, Med2, MFast, MFast2,
Fast
–16.00 ... 0.0, Off
–16.00 ... 0.0, Off
4.0 ... 50.0 ms, Off
4.0 ... 50.0 ms, Off
0 ... 100%
–6 ... 6
1:1 ... :1
0 ... 50 dB
0 ... 10 ms
OPERATION
E
OWN XPANDER
OWN
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