106
SVANTEK 977W User Manual
The
RT60 Settings
list enables the user to
select the method for
RT60
calculation,
select the name of the file, where the
registered data will be collected, and other
parameters for
RT60
calculation.
The
Start Delay
position defines the delay
period from the moment the
<Start/Stop>
push-button is pressed to the start of the
actual measurement.
<ENT>
The
Method
position enables the user
to
choose the method for
RT60
calculation:
Decay
or
Impulse
. Both methods are
described in the Appendix H.
►
The
Octave
position enables the user
to
choose for which bands (
1/1
or
1/3
) the
RT60
analysis will be performed.
=>
The
Freq. Range
position enables the user
to select the frequency range for 1/1 or 1/3
octave calculations:
-
for
1/1
octave
: 63Hz-4kHz
(7 bands)
and 63
Hz-16kHz
(9 bands).
-
for
1/3
octave:
50Hz-5kHz
(21 bands)
and
50Hz-20kHz
(27 bands).
=>
The
Recording Time
position defines the recording time of the measurement
data (sound pressure level decay curve). Data acquiring starts in the moment
of the trigger condition appearance. Recording time can be set in the range
1
÷
30 s
.
The
Time Step
position defines 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
.
