CHAPTER 5
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READING THE PROCESSING METERS
5 Reading the Processing Meters
The Processing Meters Display provides a tremendous amount of information about what’s going on inside each of Omnia.9’s
processing cores, but in a very efficient and easy-to-read manner.
C
G
F
H
D
E
A
B
I J K L M
A: Input Level, B: Auto Balance, C: Stereo Enhance Narrowing, D: Stereo Enhance Widening, E: Wideband AGC 1, F: Multiband
AGC, G: Multiband Compressor, H: Multiband Limiter, I: Wideband AGC 2, J: Wideband AGC 3, K: Multiband Output, L: MPX
Output, M: L/R Clipper
In the FM processing core, meters are provided for monitoring input levels, Input AGC, Auto Balance, Wideband AGC1,
Multiband AGC and Limiters, Multiband Noise Reduction, Multiband Stereo Enhancement, Wideband AGC2 and AGC3
sections, post-multiband output, MPX output, and individual left and right outputs. Depending on the view selected, in the HD
and Streaming cores, meters for the final look-ahead peak limiters and the final output of the processing core are added, while
the MPX output and left and AGC output meters are eliminated.
♦ The ITU BS.1770 Input meters indicate the loudness of the unprocessed source audio coming into Omnia.9 with floating
peak indicators above each bar.
♦ The Auto Balance meter (AB) indicates any corrective left-to-right channel balancing being performed.
♦ The AGC meter window shows the levels and action of the Input AGC and the Wideband AGC1 compressors. It also
shows the level of the Wideband AGC2 section when it is enabled and positioned before the multiband section.
♦ Depending upon the settings of the various Input and Wideband AGC1/AGC2 controls, the scale to the left of the meter
can display levels below threshold (positive numbers) as well as levels above threshold (negative numbers). When the
meters dip down below “0” the compressors are above threshold and therefore in a state of gain reduction. When they
rise above “0” they are below threshold and in a state of gain increase. The combination of Input AGC, AGC1, and AGC2
gain is added together to determine the total amount of AGC gain in place.
♦ The Input AGC levels are indicated by a bright yellow bar. The Wideband AGC1 levels are shown as a dark orange bar
extending below the Input AGC meter. Wideband AGC2 levels (if this compressor is situated before the multiband
section) are shown as a second, darker orange bar below the AGC1 meter.
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