ISOSTEM USER MANUAL
34 GUI Software Reference
PA Window
The PA window features a visualization of the
Panoramic Analyzer's dynamic filtering with
overlapping filter bands. The angle set in the PA
parameter section is represented by two light
grey vertical lines. A vertical spectrogram of the
incoming stereo source is shown between these
lines.
Rotation
This parameter sets the axial rotation of the PA module. Among other
things, it can be helpful in order to correct an imbalanced stereo picture.
The effect of editing this parameter can be monitored in the visualization.
Unit: Degrees
Range: -180° / +180°
Brightness
This parameter sets the spectrogram's brightness.
PA Step Gains – Input Attenuator
The PA input attenuator avoids any risk of C channel saturation during an
up-conversion. If a stereo signal is made from an identical right-left signal
with its peak level normalized (0 dBFS), the total quantity of energy cannot
be held in only one C channel without overloading. The PA input attenuator
prevents this risk.
Options: 0 dB, -3 dB, -6 dB
PA Step Gains – Rear Gain
The gain on the rear PA channels applies to the "Rear" complement chan-
nels. This additional gain aims to reinforce the envelopment and to highlight
the presence of the multichannel format.
Options: 0 dB, +6 dB, +12 dB
PA Signal Smoothing – Frequency / Time Smoothing
The temporal and frequency smoothing apply to the spectral envelopes of
the PA module filters. The temporal smoothing is a weighted averaging of
the envelopes in time, while the frequency smoothing is a weighted averag-
ing of the envelopes in frequency.
Frequency smoothing options : sharp, medium, smooth
Time smoothing options: none – 100 ms
