> if I use this formula I get amplitude values which don't make sense, if
> i put a 43 hz sine into a 1024 samples framed fft opcode
Hmm, one thing comes to mind -- 43 Hz is a low frequency, you may not
be getting many cycles in your 1024 frame, which will make amplitude
estimation noisy. Try the experiment first with 1Khz and see if the
numbers make sense ... although I'm really not a spectral estimation
guy, so this could be an incorrect analysis ...
--jl
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John Lazzaro -- Research Specialist -- CS Division -- EECS -- UC Berkeley
lazzaro [at] cs [dot] berkeley [dot] edu www.cs.berkeley.edu/~lazzaro
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