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Index › Programming Questions & Help › Sound,  Music Libraries › FFT array index out of bounds
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FFT array index out of bounds (Read 903 times)
grahambw
FFT array index out of bounds
Jan 2nd, 2008, 4:07am  
Hi, I'm getting this "array-index-out-of-bounds-exception" error using ESS and "getLevel()" with FFT. I'm running code that amounts basically to what Krister has over at the ESS site, because past working from examples I don't really know what I'm doing. Any help would be super.
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russdot
Re: FFT array index out of bounds
Reply #1 - Jan 4th, 2008, 2:01am  
grahambw,
Check to make sure that when you are creating the new FFT, that the parameter for the number of bins is a power of 2. This is mentioned in the FFT page under Parameters (there's an example too):
http://www.tree-axis.com/Ess/FFT/FFT.html

Hope that helps, I was having the same problem
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hweol
Re: FFT array index out of bounds
Reply #2 - May 18th, 2008, 9:12pm  
I'm having a similar problem, but I'm not doing any frequency analysis, just getting levels, so I didn't set any initial parameters when creating a new FFT.

I'm just trying to get live volume information. As in:

Ess.start(this);
myInput = new AudioInput();
myFFT = new FFT();
myInput.start();

p_vol = myFFT.getLevel(myInput);

Any suggestions?
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