Olympus LS-100 - Manual (Page 69)

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About the Lissajous measurement
In facilities for sound recording (such as broadcasting studios), the distance between a microphone
and a sound source is automatically measured from the phase difference. The Lissajous waveform
helps you obtain the optimal positioning of a dynamic microphone or a condenser microphone.
When using a dynamic microphone or
condenser microphone
1
Connect an amplifier to the recorder
before starting to measure.
2
[Home] { [Lissajous]
Loud amplifi er Loud amplifi er
Loud speaker Loud speaker
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EAR jack
XLR/standard phone combo jack
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What is a phase difference?
▌
A slight difference between two sound waves is
called a phase difference. The sound is equally
fed into the left/right sides of the microphone if it
is directly in front of the sound source. However,
a slight time difference is produced between
the left and right channels if the sound source is
slightly off either to the left side or right side of the microphone.
Use the lissajous measurement to perform optimal sound recording.
This function operates in accordance with the settings set in [Input Select].
A phase difference
of 90 degrees