minimodem icon indicating copy to clipboard operation
minimodem copied to clipboard
verified publisher icon kamalmostafa

use 2 Goertzel filters instead of the FFT

Open aguaviva opened this issue 4 years ago • 1 comments

Given that you are using only 2 symbols I'd be faster to use a goertzel filter instead of using a full FFT, this will also reduce the dependecy with FFTW and will simplify the fsk part in size and complexity :)

more info: https://en.wikipedia.org/wiki/Goertzel_algorithm

Actually it will be an honor to send you a MR :)

aguaviva avatar Jun 29 '21 22:06 aguaviva

Hi @aguaviva -- Did you receive my email 2021-07-17 Subject: "minimodem Goertzel implementataion"? Please reply, or let me know here if you didn't.

kamalmostafa avatar Aug 14 '21 15:08 kamalmostafa