For Linux (and I think some other *nixes) check out Baudline
(http://www.baudline.com). It's free but not open source. It's a
general purpose audio spectrum analyzer tool, not aimed at ham radio.
John
----
Bob Camp said the following on 02/18/2010 06:18 PM:
Hi
Assuming I have a decent sound card, and a computer, the next thing I need is
software. If I want:
Required:
1) non- commercial
2) 1 Hz normalization
3) good low frequency processing (decimation ahead of the fft)
4) low cost
Much preferred:
5) a non-evil OS
6) Rational performance on a non-quad core system
7) free
8) rational calibration
9) scope view.
10) reasonable graphics
11) active support by the author
The application is measuring phase noise. That what makes 2 & 3 pop up on the list.
I've looked at a lot of programs and they all seem to be pretty slick. The ones
I've looked at so far don't quite hit the mark for phase noise. I'm pretty sure
that there are others on the list who have dug into this same issue already.
Bob
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