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Get Ready to Measure - Microphone Calibration File
9.2
Microphone Calibration File
Microphone calibration is enabled from the menu:
'Measurements'
The file format of the calibration file is pure ASCII-text, which is parsed according to the
following rules:
Expects data in columns:
Frequency <separator> dB <separator> phase in degrees <eol>
Accepts the following characters as <separator>: space, semicolon, tabular
Ignores lines not starting with a number
Accepts ',' and/or '.' as decimal point
An example of such a file could be:
# HOLM A c o u s t i c s Mic 1 C a l i b r a t e d
Frequency ; Gain [ dB ] ; Phase [ d e g r e e s ]
0 ;
8 . 2 9504;0
9 . 4 2 0 7 8 ;
8 . 2 9 5 0 4 ; 0
1 5 1 0 . 0 2 ;
8.2746;
1 5 4 7 . 7 ;
8.25409;
1 5 8 6 . 7 3 ;
8.23392;
1 6 2 7 . 1 ;
8.21392;
1 6 6 8 . 8 2 ;
8.19389;
1 7 1 1 . 8 9 ;
8.17369;
1 7 5 6 . 3 ;
8.15318;
1 8 0 0 . 7 1 ;
8.13287;
1 8 4 5 . 1 3 ;
8.11274;
1 8 9 0 . 8 8 ;
8 . 0 9 2 2 1 ; 0 . 0 0 6 2 5 8 6 5
1 9 3 6 . 6 4 ;
8 . 0 7 1 9 8 ; 0 . 0 2 3 0 6 7 2
1 9 8 3 . 7 5 ;
8 . 0 5 1 5 7 ; 0 . 0 4 3 7 4 6 6
2 0 3 2 . 2 ;
8 . 0 3 1 1 4 ; 0 . 0 6 7 6 5 0 1
2 0 8 1 . 9 9 ;
8 . 0 1 0 7 7 ; 0 . 0 9 3 5 4 8 5
.
.
.
HOLM Acoustics
'Open microphone calibration'
0.0360637
0.0359415
0.0348953
0.0332587
0.0310393
0.027908
0.0232595
0.0164973
0.00696385
34 of
HOLMFIR User Guide v0.4.4
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