Olympus Recording Equipment LS-100 User Manual

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About the Lissajous measurement
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]
3
The current measurement value appears
Examples of the measurement
display:
Phase difference 135
degrees
Phase difference 0
degree
Phase difference 90
degrees
Phase difference 180
degrees
Loud amplifierLoud amplifier
Loud speaker Loud speaker
The flow of the reference signal
EAR jack
XLR/standard phone combo jack
R
L
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.
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