Phase Processing Menu - Omnia .9 Installation & User Manual

FM MENU INTERMEDIATE MODE

Phase Processing Menu

The Phase Processing menu contains the controls for enabling the phase scrambler, enabling and adjusting the phase rotator,
and enabling and adjusting the Bass-EFX feature.
The Phase Scrambler button enables or disables the phase scrambler. Certain sharp sounds with high harmonic content
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(such as trumpets or some synthesized sounds) are low in energy but contain high peaks. Since peaks must be limited
to prevent over-deviation of the FM carrier, and the majority of those peaks will be removed by clipping, the sound may
become dull and distorted. The Phase Scrambler, without employing limiting or clipping of its own, slightly offsets the
various harmonics present in the audio to drastically lower the peak level, thereby allowing much more of the audio to
pass through the final clipper. The result is a dramatically improved high end and less distortion.
The Phase Rotator button enables or disables the phase rotator. Phase rotation is recommended primarily for stations
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airing talk programming who are also trying to achieve high levels of loudness as it can adversely affect transient "punch"
desirable on music formats. The Level Slider adjusts the amount of phase rotation. Carefully monitor the MPX Output
signal on the oscilloscope while listening to dry voice and advance the slider just enough to achieve symmetrical peaks.
The default setting is 3.
The Bass-EFX menu allows you to enable or disable the Bass-EFX feature and, when enabled, adjust the level of Bass-EFX
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processing. When used in conjunction with heavier overall levels of processing, Bass-EFX helps retain the punch of
low-frequency transients such as those found in a kick drum by spreading the bass energy out in time, thus allowing more
of the energy of a bass kick to pass through the clippers. Bass-EFX does not itself add energy.
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