I've generated some test tones (100-3000 in 100Hz increments, then
1000Hz incrememnts up to 14Khz) and it seems that the 8-bar Spectrum
Analyzer is not weighting the lower frequencies as strongly as it
possibly should. I tested using MP3 format as for some reason my SBG2
wouldn't play the WAV formats.
It would appear that the following frequencies correspond to each bar:
Code:
--------------------
Bar 1 - 0Hz - 1000Hz
Bar 1 & 2 - 1100Hz - 1900Hz
Bar 2 - 2000Hz - 2500Hz
Bar 2 & 3 - 2600Hz - 3000Hz
Bar 3 - 4000Hz
Bar 4 - 5000Hz
Bar 4 & 5 - 6000Hz
Bar 5 & 6 - 7000Hz
Bar 6 - 8000Hz
Bar 7 - 9000Hz
Bar 7 & 8 - 10,000Hz
Bar 8 - 11,000Hz
Bar 7 & 8 - 12,000Hz
Bar 7 - 13,000Hz
Bar 6 & 7 - 14,000Hz
Bar 8
14,000
13,000
12,000
11,000
4000 5000 6000 7000 8000 9000 10,000
2600-3000
2000-2500
1100-1900
0 - 1000
Bar 1 | Bar 2 | Bar 3 | Bar 4 | Bar 5 | Bar 6 | Bar 7
| Bar 8 |
--------------------
For some reason frequencies above 11K are begin to appear in lower bars
of the analyzer.
It would better, I think, if the first 4 bars were used to represent
frquencies between 0-3500Hz, with the remaining 4 bars used for
frequencies above 3000Hz. This may give a better representation that at
present.
eg.
Code:
--------------------
11,000+
10,000
9000
8000
7000
6000
5000
4000
3100-3500
2600-3000
2100-2500
1600-2000
1100-1500
600-1000
0 - 500
Bar 1 | Bar 2 | Bar 3 | Bar 4 | Bar 5 | Bar 6 | Bar 7
| Bar 8 |
--------------------
I'll take a look and see if I can tweak anything in squeezebox2.pm, but
as I know next to nothing about Perl I'm not expecting much success! :)
--
Milhouse
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