3-58
OPERATION
ORBAN MODEL 1101
The
M
ULTIBAND
D
RIVE
interacts with the
M
ULTIBAND
R
ELEASE
. With slower release time
settings, increasing the
M
ULTIBAND
D
RIVE
control scarcely affects density. Instead, the
primary danger is that the excessive drive will cause noise to be increased excessively
when the program material becomes quiet. You can minimize this effect by activat-
ing the single-ended noise reduction and/or by carefully setting the
M
ULTIBAND
G
ATE
T
HRESHOLD
control to freeze the gain when the input gets quiet.
When the release time of the Five-Band compressor is set towards
F
AST
, the setting
of the
M
ULTIBAND
D
RIVE
control becomes much more critical to sound quality be-
cause density increases as the control is turned up. Listen carefully as you adjust it.
With these fast release times, there is a point beyond which increasing the Five-Band
compressor drive will no longer yield more loudness, and will simply degrade the
punch and definition of the sound. Instead, let the AGC do most of the work.
Because excessive loudness is an irritant in sound for picture, there is almost never
any reason to push processing to the point where it degrades the audio. We recom-
mend no more than 10dB gain reduction as shown on the meters for Band 3. More
than 10dB, particularly with the fast release time, will often create a wall of sound
effect that many find fatiguing.
To avoid excessive density with fast Five-Band release time, we recommend using no
more than 5dB gain reduction in band 3, compensating for any lost loudness by
speeding up the
AGC
R
ELEASE
instead.
Multiband Release; Speech Multiband Release
control can be switched to any
of seven settings. To understand how to adjust this control for video programming,
please see the discussion above under
MB
D
RIVE
.
The
S
PEECH
MB
R
ELEASE
control overrides the
MB
R
ELEASE
control when OPTIMOD-
PC automatically detects speech (page 3-6). You may wish to set the
S
PEECH
MB
R
ELEASE
control faster for speech (to maximize smoothness and uniformity) and
Multiband Attack/Release/Threshold
Advanced Name
Range
Multiband Release
Slow, Slow2, Med, Med2, MFast, MFast2, Fast
Speech Multiband Release
Slow, Slow2, Med, Med2, MFast, MFast2, Fast
Loudness Threshold
Off, 0.0 … -24.0 dB
Loudness Attack
0…100%
Loudness Bass Couple
0…12 dB, Off
Bx Compression Threshold
–16.00 … 0.0, Off
Bx Speech Compression Threshold
–16.00 … 0.0, Off
Bx Attack
4.0 … 50.0 ms, Off
Speech Bx Attack
4.0 … 50.0 ms, Off
Bx Limiter Attack
0 … 100%
Bx Delta Release
–6 … 6
Bx Knee
1…50 dB
Bx Compression Ratio
1:1…
∞
:1
Bx Breakpoint
1…50 dB
Transient Enhance
0…10 ms
Table 3-10: Multiband Attack / Release Controls
Summary of Contents for Optimod-PC 1101
Page 4: ......
Page 14: ......
Page 121: ...OPTIMOD PC OPERATION 3 1 Section 3 Operation Figure 3 1 The OPTIMOD PC Control Application...
Page 192: ...3 72 OPERATION ORBAN MODEL 1101...
Page 204: ......
Page 210: ......
Page 212: ...5 2 UNINSTALLATION ORBAN MODEL 1101...
Page 236: ......
