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Cycle through EDT, T20 and T30 using the button on the right. Note that each of these
three metrics is always calculated and saved for each measurement, even if only one metric
at a time is displayed on the screen at a time.
Quite often, a single RT60 measurement is insufficient to obtain a stable result. Many
application standards require that data from multiple measurements are averaged. Some-
times the position of the noise source and/or measurement microphone must be changed
in between measurements.
The averaging of multiple measurements is supported in the following way:
•
On the bottom left of the screen you will find an "accept individual" but-
ton, which is not usually present in other measurement modules. Use this
to commit a measurement to memory, if you are satisfied (upon inspection
of the decay curves) that the measurement is valid.
•
Once your first (valid) measurement is finished, press "accept individual"
•
The letters and the numeral "#1" are now greyed out on the accept button.
•
Now repeat the test procedure as many times as required, pressing "accept"
after each measurement. The serial number is incremented after each indi-
vidual measurement.
•
Data from up to 20 individual measurements can be kept in the device
memory at the same time.
•
In the "RT60 measurement details" screen, you can inspect the latest
individual measurement as well as the mean across all measurements.
•
Once you are satisfied with the overall (mean) results, press the "Save"
button (to the right of the "arm" button). Mean data from all measurements
are now permanently saved and the temporary memory is reset.
•
When browsing through save measurements (in the "browse measurements"
screen), you will see the mean data from each measurement series.
RT60 measurement results.
VOX-01 Operating Manual
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