NTi Audio Acoustilyzer AL1 - Manual (Page 50)

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How to measure
Note: Please de-activate any shock
protection of the CD-player since
this might cause incorrect test
results!
Test preparations
• Switch on the acoustical delay time
measurement signal, available on the
AL1 Test CD.
• Connect the electrical signal, e.g. from
the CD player, to the AL1 RCA or XLR
input.
• Wait until the Acoustilyzer synchronizes
to the incoming delay time test chirp and
the synchronization time bar fills up to
100%.
The delay time measurement is conducted
between the synchronized electrical input
signal and the built-in microphone of the
Acoustilyzer.
Measure Reference Speaker
• Select a speaker as reference speaker,
called speaker A, e.g. the first speaker in
the delay line.
• Position yourself in the sound field of
the next speaker under test, e.g. called
speaker B, to measure the delay time
compared to the reference speaker A.
Note: Do not position the Acoustilyzer
too close to reflecting surfaces,
such as walls or floors. The
reflections may interfere with
accurate measurements.