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OPTIMOD-PC
band. For example, if you set the M
GR control to –2, then the band 3 release time will be the same as if
B
3 D
AND
ELTA
you had set the M
control to 0. Thus, your settings automatically track any changes you make in the
M
R
ULTIBAND
ELEASE
two "click stops" slower than the setting of the M
If your setting of a given D
slower than "slow" or faster than "fast" (the two end-stops of the M
control), the band in question will instead set its release time at the appro-
R
ELEASE
priate end-stop.
Band 1-5 MaxDeltGR controls set the maximum permitted gain difference be-
tween the left and right channels for each band in the multiband limiter. The five-
band processing chain uses a full dual-mono architecture, so the channels can be
operated anywhere from fully coupled to independent. We recommend operating
band 1-4 fully coupled (B
However, audio-processing experts may want to experiment with lesser amounts of
coupling to achieve a wider, "fatter" stereo image at the cost of some image insta-
bility.
B5 M
D
GR is set O
AX
ELT
fast-operating high frequency limiter that works independently on the left and right
channels. This prevents gain reduction in one channel from causing audible spectral
modulation on the other channel. However, the additional stereo difference chan-
nel energy created by independent operation can adversely affect certain low bi-
trate codecs (like WMA). It is wise to do careful listening tests through the codec to
determine if it sounds better with B5 M
B1/B2 Crossover (Band 1 to Band 2 Crossover Frequency) sets the crossover fre-
quency between bands 1 and 2 to either 100 Hz or 200 Hz. It significantly affects the
bass texture, and the best way to understand the differences between the two
crossover frequencies is to listen.
B1-B5 Compression Ratio: See page 3-53.
Note that the multiband gate only works appropriately when the K
controls of all bands are set identically, which is typically the case in broadcast appli-
cations. We recommend turning off the multiband gate if the individual K
settings are unequal.
R
ATIO
B1-B5 Knee: See page 3-54.
B1-B5 Breakpoint: See page 3-54.
ULTIBAND
R
control to medium and set the B
ULTIBAND
ELEASE
control. In our example, the release time in band 3 will always be
R
ELTA
ELEASE
1-4 M
D
AND
AX
most factory presets. This permits band 5 to be used as a
FF
AX
R
control to medium-fast and the
ELEASE
R
ULTIBAND
ELEASE
control would otherwise create a release
GR = 0) for best stereo image stability.
ELT
GR = 0 dB.
D
ELT
OPERATION
3 D
GR
AND
ELTA
control.
ULTIBAND
and R
NEE
ATIO
and
NEE
3-63
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