DFT.h File Reference

16-point discrete fourier transform More...

#include <stdint.h>

Go to the source code of this file.

Functions
void	NoiseReject_Init (void)
	Initialization of noise reject filter. More...
int32_t	NoiseReject (int32_t x)
	removes random noise from audio signal More...
void	DFT_Init (void)
	Initialization of discrete fourier transform. More...
void	DFT (uint32_t i, int32_t x)
	Run DFT. More...
int32_t	Mag1 (void)
	magnitude of the first frequency More...
int32_t	Mag2 (void)
	magnitude of the second frequency More...

Detailed Description

16-point discrete fourier transform

16-point discrete fourier transform
Let the sampling rate be fs
first frequency f1 is fs/16
second frequency f2 is 2*fs/16

Author

Valvano

Warning

AS-IS

Date

July 29, 2026