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Chapter 6 The Extended Audio Matrix.
7.2.1
PRELIMINARY Release
MSD Software Manual.
The Audio Vector Oscilloscope
The ‘Audio Vector Oscilloscope’ is also known under the names ‘Stereo Image
Monitor’ or ‘Goniometer’. It is based on continuous graphic illustration of a
stereo signal in the Lissajous-format.
If phase and amplitude is randomly distributed, the signal is an ideal stereo
signal. Normally this will only happen with a live recorded signal. Applause from
a live-recorded audience is an excellent example of a true stereo signal. The
figure of a true stereo signal should be represented on the ‘Audio Vector
Oscilloscope’ as a perfect circle, or rather a ‘ball’ See the illustrations below on
examples of different signal types as they appear on the ‘Audio Vector
Oscilloscope’, and note the relationship between the representations on the
‘Phase Correlation Meter’ and the ‘Audio Vector Oscilloscope’.
Ideal stereo signal.
Reversed phase stereo signal.
Left signal.
Right signal.
Mono signal.
Reversed phase mono signal.
Please refer to section 5 ‘The Compact Audio Matrix’ on how to select the two
source signals for the ‘Audio Vector Oscilloscope’. Destination #53 and #54.
Page 20 of 64.
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