You can subscribe to this list here.
2004 
_{Jan}

_{Feb}

_{Mar}

_{Apr}

_{May}

_{Jun}

_{Jul}

_{Aug}

_{Sep}

_{Oct}

_{Nov}
(40) 
_{Dec}
(29) 

2005 
_{Jan}
(7) 
_{Feb}
(12) 
_{Mar}
(28) 
_{Apr}
(27) 
_{May}

_{Jun}
(13) 
_{Jul}
(4) 
_{Aug}
(7) 
_{Sep}
(1) 
_{Oct}
(2) 
_{Nov}
(32) 
_{Dec}
(49) 
2006 
_{Jan}
(31) 
_{Feb}
(16) 
_{Mar}
(15) 
_{Apr}
(15) 
_{May}
(21) 
_{Jun}
(1) 
_{Jul}
(1) 
_{Aug}
(5) 
_{Sep}
(2) 
_{Oct}
(21) 
_{Nov}

_{Dec}
(6) 
2007 
_{Jan}
(21) 
_{Feb}

_{Mar}

_{Apr}
(5) 
_{May}
(1) 
_{Jun}
(3) 
_{Jul}
(10) 
_{Aug}
(38) 
_{Sep}
(21) 
_{Oct}
(38) 
_{Nov}
(23) 
_{Dec}
(3) 
2008 
_{Jan}
(72) 
_{Feb}
(45) 
_{Mar}
(46) 
_{Apr}
(5) 
_{May}
(2) 
_{Jun}
(33) 
_{Jul}

_{Aug}
(9) 
_{Sep}
(6) 
_{Oct}
(1) 
_{Nov}
(17) 
_{Dec}
(73) 
2009 
_{Jan}
(20) 
_{Feb}
(28) 
_{Mar}
(7) 
_{Apr}
(24) 
_{May}
(8) 
_{Jun}
(59) 
_{Jul}
(38) 
_{Aug}
(25) 
_{Sep}
(19) 
_{Oct}
(40) 
_{Nov}
(43) 
_{Dec}
(53) 
2010 
_{Jan}
(22) 
_{Feb}
(12) 
_{Mar}
(14) 
_{Apr}
(4) 
_{May}
(29) 
_{Jun}
(26) 
_{Jul}
(7) 
_{Aug}
(14) 
_{Sep}
(16) 
_{Oct}
(34) 
_{Nov}
(13) 
_{Dec}
(8) 
2011 
_{Jan}

_{Feb}

_{Mar}
(1) 
_{Apr}
(1) 
_{May}

_{Jun}
(5) 
_{Jul}
(10) 
_{Aug}
(2) 
_{Sep}
(3) 
_{Oct}

_{Nov}
(1) 
_{Dec}
(1) 
2012 
_{Jan}

_{Feb}
(1) 
_{Mar}

_{Apr}

_{May}

_{Jun}

_{Jul}
(4) 
_{Aug}

_{Sep}
(21) 
_{Oct}

_{Nov}

_{Dec}

2013 
_{Jan}

_{Feb}

_{Mar}
(1) 
_{Apr}

_{May}

_{Jun}

_{Jul}

_{Aug}

_{Sep}

_{Oct}
(6) 
_{Nov}

_{Dec}

2014 
_{Jan}

_{Feb}
(2) 
_{Mar}

_{Apr}

_{May}
(1) 
_{Jun}

_{Jul}
(3) 
_{Aug}

_{Sep}
(1) 
_{Oct}

_{Nov}

_{Dec}

2015 
_{Jan}
(2) 
_{Feb}

_{Mar}

_{Apr}

_{May}

_{Jun}

_{Jul}

_{Aug}

_{Sep}

_{Oct}

_{Nov}

_{Dec}

S  M  T  W  T  F  S 

1

2

3

4

5

6

7

8

9

10

11
(1) 
12

13

14

15

16

17

18

19

20

21

22

23
(3) 
24

25

26

27

28

29

30

31





From: Gale (Audacity Team) <gale@au...>  20120723 17:45:02

In the Generate, Effect and Analyze menus, items above the divider are builtin, and items below the divider are plugins. So yes you will have to compile Audacity to change Plot Spectrum. See: http://wiki.audacityteam.org/wiki/Developer_Guide . Gale  View this message in context: http://audacity.238276.n2.nabble.com/PlotSpectrumAnalyzePlugintp7555774p7555776.html Sent from the audacitynyquist mailing list archive at Nabble.com. 
From: Mark Lorenz <mark.lorenz@sh...>  20120723 13:34:59

*What I'd Like to Do:* I'd like to modify xaxis range of the plot produced by the "Plot Spectrum" Analysis plugin. I only want to see frequencies < 500Hz. *Why I Want To:* The analysis I'm doing only requires me to look at lower frequencies, so visually it would help me to only see the lower frequencies. I know this won't change the actual resolution of the FFT, it's only for display purposes. *What I Already Tried:* According to the audacity wiki, most of the plugins are implemented in nyquist. Unfortunatly, "Plot Spectrum" doesn't appear to be one of them, it's not in the `plugins` folder. I also reviewed the http://code.google.com/p/audacity/source/browse/audacitysrc/#audacitysrc%2Ftrunk%2Fsrc Audiacity source files . It looks like the code that produces the plot is contained in http://code.google.com/p/audacity/source/browse/audacitysrc/trunk/src/FreqWindow.cpp FreqWindow.cpp . *So Finally:* Do I understand the code correctly, in order to change the plotted frequency range I would need to modify `FreqWindow.cpp` around line 545 and compile Audacity from my forked source? /Maybe this belongs in audacitydevel?/  View this message in context: http://audacity.238276.n2.nabble.com/PlotSpectrumAnalyzePlugintp7555774.html Sent from the audacitynyquist mailing list archive at Nabble.com. 
From: Mark Lorenz <mark.lorenz@sh...>  20120723 13:19:19

Thank you, it's much clearer now.  View this message in context: http://audacity.238276.n2.nabble.com/NyquistFFTTutorialHelptp7265789p7555773.html Sent from the audacitynyquist mailing list archive at Nabble.com. 
From: rbd <rbd@cs...>  20120711 18:53:53

Hi Mark, You are right. I don't know how the 1 got in there (maybe a typo) because I get 16 as well. I added some text to my copy of the Nyquist FFT Tutorial as follows, which might answer other questions: Running this prints an array of nearlyzero values except for the 9th element (index 8), which is 16. (In an ideal world, all other values would be exactly zero, but because numerical computation has limited precision, you may see some ugly values like 1.15578e15. The "e15" part means 10totheminus15 power, or 0.000000000000001, which is at least pretty close to zero.) The layout is as follows (remember that the Fourier Transform analyzes a signal as the sum of sines and cosines): the DC component goes in array element 0. The /DC component/ is just the coefficient for the zerofrequency cosine component. Since cosine at zero frequency is equal to 1 everywhere, this is just the sum of all the samples. In electrical terms, alternating current (AC) averages to zero, and any nonzero average is the direct current (DC) part. Note that sine of zero is zero, so there is no zerofrequency sine term. the Cosine part is in elements 2i  1. /Cosine part/ means the real coefficients of the cosines at various frequencies. the Sine part is in elements 2i. /Sine part/ means the real coefficients of the sines at various frequencies. the Nyquist frequency component is in the last element. The /Nyquist frequency component/ is the coefficient for the cosine component at half the sampling rate (which is also called the Nyquist frequency). Note that at the Nyquist frequency, samples of sine would be taken at the angles of 0 and PI, where sine is zero, so there is no Nyquist frequency sine term. The output should look like this: > (load "fft1.lsp") ;loading "fft1.lsp" ;ffttest : (SEND FFTITER :NEXT) = ; #(4.89859e16 0 0 0 0 0 0 2.38419e07 ; 16 0 0 0 0 0 0 4.89859e16 ; 0 0 0 0 0 0 0 2.38419e07 ; 0 0 0 0 0 0 0 4.89859e16) ;T ;> Thus, the element at index 8 is the 4th Sine component, indicating a 4th harmonic as expected. Why is the number 16 rather than 32 or 1? This is just how the FFT is defined. And why 16 rather than +16. Again, if you look closely at the definition, you'll find a minus sign either in front of the sine term or in the complex exponential. While these may not seem to be exactly coefficients of sines and cosines, the FFT and IFFT are carefully defined to be inverses of one another.  View this message in context: http://audacity.238276.n2.nabble.com/NyquistFFTTutorialHelptp7265789p7555684.html Sent from the audacitynyquist mailing list archive at Nabble.com. 