The RT60 Settings list allows you to select
the method for RT60 calculations, define the
name of the file, where the registered data will
be collected, and other parameters for RT60
calculations.
The Start Delay parameter defines the delay
period from the moment the <Start> key is
pressed to the start of the actual
measurement.
The Method parameter allows you to choose
the method for RT60 calculations: Decay or
Impulse. Both methods are described in
Appendix E.
The Octave parameter defines for which
bands (1/1 or 1/3) the RT60 analysis will be
performed.
The Freq. Range parameter defines the
frequency range for 1/1 or 1/3 octave
calculations:
• for 1/1 octave: 63Hz-4kHz (7 bands) or
63Hz-16kHz (9 bands),
• for 1/3 octave: 50Hz-5kHz (21 bands) or
50Hz-20kHz (27 bands).
The Recording Time parameter defines the recording time of the
measurement data (sound pressure level decay curve). Data registration starts
in the moment of the trigger condition appearance. Recording time can be set
in the range 1 ÷ 30 s.
Recording Time can be set to Auto. In this case, the recording length and time
step are selected automatically.
If Recording Time is not set to Auto, then an additional parameter appears in
the list (Time Step) that defines the interval with which the time-step of data
registration (sound pressure level) in the file. The parameter value can be
selected from the set: 2, 5, 10, 20, 50, 100 ms.
The Averaging parameter defines the
averaging of the reverberation time results
from several measurements.
When this option is switched on the
Averaging position appears on the RT60 bar
plot.
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