User manual

47
Sound Level Meter
Sample name of wav-file:
1
MyTest_SLM_000_Audio_FS133.0dB(PK)_00.wav
2 3 4
5
1
MyTest
File name defined by user.
2
SLM
Measurement function.
3
000
Automatically incrementing file number.
4
Audio_FS133.0dB(PK)
Audio file with full scale peak level. In case of a Com-
pressed + AGC recording, the file name reads “AGC”; this
file contains corrected level information only.
5
00
For wav-file recording over longer periods, the XL2 splits
the audio data into individual wav-files with about 500 MB
(compressed audio: 12 hours; linear: 1 hour), keeping the
file size small for easier handling on the PC. The number
5
increments for each successive wav-file.
The advantage of wav-file recordings is to identify and docu-
ment sound sources after the measurement. For example, at
a live event an excessive peak level may have been measured
and logged. Actually, this peak level was caused by people
shouting nearby the measurement microphone, and not by the
audio system being monitored. The recorded wav-file assists in
verifying this and the test results can then be post-processed.
Pausing Measurement
If any ongoing measurement is paused , the
XL2 continues the recording of wav-files during
the paused period. The logged data and audio
data can be synchronized using the stored real-
time information.
Events
The wav-files are stored in a folder, named, for
example,
2011-11-30_SLM_000_AudioEvent_0001-0200.
The actual wav-files are named for example, as
xxxx_FS133.0dB(PK).wav (xxxx = incrementing
number)