Olympus LS-100 - Manual (Page 70)

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The current measurement value appears.
• When there is no phase difference (0
degrees), it means that sound is being
equally fed into the left/right channels
of the microphone. If phase difference
arises, the line becomes wider. At a
phase difference of 90 degrees, the
line forms a circle.
Examples of the measurement
display:
Phase diff erence 135
degrees
Phase diff erence 0
degree
Phase diff erence 90
degrees
Phase diff erence 180
degrees
About the Lissajous measurement
Phase diff erence 45
degrees