Soft dB Opus Suite Building Acoustics Module Airborne Sound Isolation between Rooms ASTM E 336_ISO 140-4 - Manual (Page 10)

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Step 3 Do a Reverberation Measurement
To proceed to a reverberation measurement, select an element to measure in the table of the main
panel and click the button to open the measurement interface.
Once in the measurement panel, click on the button to start the reverberation
measurement. The acquisition end by itself once the number of averages is reached.
Click on the button to accept the measurement.
• An omnidirectional should be used
• A first source position should be in center of the receiving room.
• Several fixed microphone locations should be used.
• Keep the microphone at least 1 meter away from any major extended surface.
• Keep the microphone at least 1 meter away from the source.
• The more source positions and the more microphone position, the more the reverberation
time will be representative.
Start the
Measurement
Accept the
measurement