SSTV-Decoder/include/fft/fft.h

#pragma once

#include "derivative.h"

#define FFT_N 256

#define FFT_BIN(num, re) (uint16_t)((float)(num + 0.5) * re)
#define FFT_INDEX(freq, re) (uint16_t)((float)freq / re)

void FFT(q15_t *data, uint16_t len);
feat: fft and comman table 2023-04-23 21:24:45 +08:00			`#pragma once`

style: macro location; fix: hanning window width 2023-04-28 14:45:46 +08:00			`#include "derivative.h"`
feat: fft and comman table 2023-04-23 21:24:45 +08:00
feat: 100us count, fft length, sample rate 2023-04-28 18:11:09 +08:00			`#define FFT_N 256`
feat: fft and comman table 2023-04-23 21:24:45 +08:00
refactor: code style (if-else in one line) remove: old hanning window feat: FFT fixed length 2023-04-24 01:05:42 +08:00			`#define FFT_BIN(num, re) (uint16_t)((float)(num + 0.5) * re)`
			`#define FFT_INDEX(freq, re) (uint16_t)((float)freq / re)`
feat: fft and comman table 2023-04-23 21:24:45 +08:00
style: macro location; fix: hanning window width 2023-04-28 14:45:46 +08:00			`void FFT(q15_t *data, uint16_t len);`