Osmocom GMR-1 AMBE vocoder math functions. More...

#include <math.h>
#include "private.h"

Functions
float	cosf_fast (float angle)
	Fast Cosinus approximation using a simple table. More...

float	sinf_fast (float angle)
	Fast Sinus approximation using a simple table. More...

void	ambe_fdct (float out, float in, int N, int M)
	Forward Discrete Cosine Transform (fDCT) More...

void	ambe_idct (float out, float in, int N, int M)
	Inverse Discrete Cosine Transform (iDCT) More...

void	ambe_fdft_fc (float out_i, float out_q, float *in, int N, int M)
	Forward Discrete Fourrier Transform (float->complex) More...

void	ambe_idft_cf (float out, float in_i, float *in_q, int N, int M)
	Inverse Discret Fourrier Transform (complex->float) More...

Detailed Description

Osmocom GMR-1 AMBE vocoder math functions.

Functions