The 5-Band Structure - Orban OPTIMOD 6300 Operating Manual

OPTIMOD 6300 DIGITAL
mences slowly and then speeds up as it progresses.
The 2B B
REAKPOINT
.
L
INEAR
Compression-induced audio density remains constant when the gain reduction is
above the 2B B
setting, density decreases proportionally to the amount of gain reduc-
B
REAKPOINT
tion.
For example, if the 2B B
be constant when the gain reduction is above 10 dB. Between 10 dB and 0 dB gain
reduction, the release rate will slow down more and more.
The calibration of the B
= infinity:1 — i.e., when the compression ratio is essentially infinite. When the
R
ATIO
ratio is less than infinite, the effective breakpoint of the compressor will be lower
than 2B B
REAKPOINT
The main use of the 2B B
tionably increasing audio density when using low compression ratios and a signifi-
cant amount of gain reduction—for example, 10 dB. The 2B B
best adjusted by ear. If you find that density increases too much as gain reduction
increases, lower the 2B B
density at high amounts of gain reduction, increase the 2B B
ting. 10 dB is a good starting point for setting this control.
2B Crossover sets the structure of the 2-band crossover to Allpass or Linear. See
AGC C
ROSSOVER

The 5-band Structure

The 5-band structure consists of a stereo enhancer, a slow gain-riding 2-band AGC,
an equalization section, a 5-band compressor, a dynamic single-ended noise reduc-
tion system, an output mixer (for the five bands), and a low-IM look-ahead limiter.
Unlike the 2-band structure, whose 2-band compressor has a continuously variable
release time, the release time of the 5-band compressor is switchable to seven in-
crements between slow and fast. Each setting makes a significant difference in the
overall flavor and quality of the sound.
When the input is noisy, you can sometimes reduce the noise by activating the sin-
gle-ended noise reduction system. Functionally, the single-ended noise reduction
system combines a broadband downward expander with a program-dependent low-
pass filter. This noise reduction can be valuable in reducing audible hiss, rumble, or
ambient studio noise. We use it for the news and sports factory presets.
control is only active when the 2B R
setting. When the gain reduction is below the 2B
REAKPOINT
is set to 10
REAKPOINT
controls is only accurate when K
REAKPOINT
setting.
control is to prevent the compressor from objec-
REAKPOINT
control's setting. If you would like to have more
REAKPOINT
on page 3-37 for more detail about these modes.
S
ELEASE HAPE
, the release rate (in dB/second) will
DB
NEE
REAKPOINT
REAKPOINT
OPERATION
control is set to
= 0 dB and/or
control is
control's set-
3-47