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Appendix a – Cobalt Digital FUSION 3G 9985 3G_HD_SD Loudness Processor User Manual

Page 132

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Appendix A

User-Adjustable Parameters

A-4

9985 PRODUCT MANUAL

9985-OM (V1.18)

• Progressive Release:

0 - 100, slowest - fastest (default: 50)

Sets the speed at which the release time is increased faster at very low gain
values. This feature approximates a logarithmic release to help recovery
from dramatic gain reduction more quickly.

Multiband AGC

This section is the heart of the dynamics processing engine. A multiband
AGC (i.e., compressor) that allows for medium ratio (3:1 is default)
adjustment of audio band. Adjustable parameters are:

• Ratio:

1.0:1 to Inf: 1 (default: 3.0:1)

• B1-B5 Inf: 1 Above Thresh:

Enabled / Disabled

default:
B1: Enabled
B2: Enabled
B3: Disabled
B4: Disabled
B5: Disabled

AGC automatically increases ratio to Infinity:1 once a signal exceeds the
threshold (set below), allowing for expansion below the threshold and
limiting above the threshold. Useful for bass frequency control.

• Range:

0 dB to 24 dB (default: 24 dB)

Range sets how much gain expansion above unity is able to be performed.
This adjustment is reflected in real time by changing the AGC meter scale.

• Progressive Release:

0 - 100, slowest - fastest (default: 50)

Sets the speed at which the release time is increased faster at very low gain
values. This feature approximates a logarithmic release to help recovery
from dramatic gain reduction more quickly.

• B1 - B5 AGC Attack:

0 - 150, slowest - fastest

default:
B1: 46
B2: 88
B3: 88
B4: 88
B5: 92

Sets how fast an input signal is acted upon once is crosses the set threshold.