Miranda UAP-1783 Operations Instructions download pdf (Page 18)

GUIDE TO INSTALLATION AND OPERATION

14 | UAP-1783

3.3.2 Dynamic Processing

This process is part of the input processor, refer to

the block diagram on page 2.

3.3.2.1 CH 1 to CH 8 tabs:

Each of these tabs controls the dynamic

processing for one channel. The available

functions are Limiter, Compressor, and Downward

Expander. A Gain trim allows compensation of the

loudness attenuation that follows compression.

A graphic of the input to output transfer function,

VU and PEAK meters for the program, and

compression meter will facilitate the adjustments

for each channel. Eight channel metering is active

for one minute only after any setting modification

on the current tab, or after a click on Dynamics

for 1 min box.

At any time a Bypass Settings checkbox allows

immediate comparison between processing ON or

OFF.

The Mode pull-down menu is used to link two or

more channels, so they can share the same

dynamic controls to keep a coherent stereo or

multi channel image. The stereo choice links an

odd channel with (odd + 1) channel.

The Dynamic Gain is adjusted from 0 to +24 dB

gain with the slider or a direct keyboard entry.

The Limiter Threshold is adjusted from 0 to -20 dBFS with the slider or a direct keyboard entry. 0 is the

default value and corresponds to Limiter OFF. For analog inputs, the correspondence between the dBFS and

the dBu values depends on the Input 0 dBFS setting (Audio Processing Tab - Config sub-tab).

The adjustable parameters for the Compressor are the Attack Time, Release Time, Threshold and Ratio.

The Threshold is adjustable with a slider between -60 and 0 dBFS, 0 is the default value and corresponds to

an OFF position. The other parameter values are accessible via pull-down boxes.

The adjustable parameters for the downward Expander are Threshold and Ratio. The output-to-input ratio of

1/1 is the default value and corresponds to the OFF position. The Threshold is accessible via a pull-down

box.

At the bottom of the tab, from left to right, appear the dynamic meters and the VU and PEAK meters.

The dynamic meter moves downward and indicates the attenuation applied to the audio channel, the

Dynamic Gain effect is not displayed. The scale goes from 0dB at the top to -31 dB at the bottom.

The VU meter is displayed with a bar and the PEAK meter with a dot.

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Miranda UAP-1783 Operations Instructions Page 18