Do you know the frequency(ies) of the beep you are looking for? Perhaps
a bank of IIR filters at the beep frequencies would be cheaper than an
FFT, and is more of a continuous processing so it won't have edge
conditions? Or maybe just a simple energy detection, and then do the FFT
when you see energy?
- fft beep detection with overlap Al Grant
- Re: fft beep detection with overlap David Hagood
