Barracuda Networks SP4 Instrukcja Użytkownika Pobierz pdf (Strona 59)

STEREO GENERATOR –LEVEL AND WORKING MODES

ENG

Axel Technology srl

www.axeltechnology.com

4) Enable normal audio processing on the audio processor.

Depending on the input level and on the audio material contents, audio peak will range between 1 and 8 segments on

the meter reference scale.

This peak increase on dynamic conditions is due to overshoot of input digital filter.

An overshoot of 3-4 segments (around 1 dB) may be deemed acceptable in case of disabled Barracuda preemphasis

and an overshoot of 6-7 segments may be deemed acceptable in case of enabled Barracuda preemphasis.

As practical rule, if the audio peak ranges in the left half of Clipper Zone, possible overshoots will be compensated by

Barracuda filters.

The following picture displays two

acceptable

calibrations:

The following picture displays two

unacceptable

calibrations (please, adjust Gain controls until peak ranges in the left half

Clipper Zone):

REMARKS:

For a safer modulation, audio peaks should never exceed the Clipper Zone.

An audio material which is Preemphasized-only (i.e. not processed) may create very high peaks (over 13

dB). In this case, no accurate modulation control can be accomplished.

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Barracuda Networks SP4 Instrukcja Użytkownika Strona 59