filters.c File Reference

#include "filters.h"
#include "stack_alloc.h"
#include "misc.h"
#include "math_approx.h"
#include "ltp.h"
#include <math.h>

Include dependency graph for filters.c:

Defines
#define	COMB_STEP   1.0
Functions
void	bw_lpc (spx_word16_t gamma, const spx_coef_t *lpc_in, spx_coef_t *lpc_out, int order)
void	signal_mul (const spx_sig_t *x, spx_sig_t *y, spx_word32_t scale, int len)
void	signal_div (const spx_sig_t *x, spx_sig_t *y, spx_word32_t scale, int len)
spx_word16_t	compute_rms (const spx_sig_t *x, int len)
void	filter_mem2 (const spx_sig_t *x, const spx_coef_t *num, const spx_coef_t *den, spx_sig_t *y, int N, int ord, spx_mem_t *mem)
void	iir_mem2 (const spx_sig_t *x, const spx_coef_t *den, spx_sig_t *y, int N, int ord, spx_mem_t *mem)
void	fir_mem2 (const spx_sig_t *x, const spx_coef_t *num, spx_sig_t *y, int N, int ord, spx_mem_t *mem)
void	syn_percep_zero (const spx_sig_t *xx, const spx_coef_t *ak, const spx_coef_t *awk1, const spx_coef_t *awk2, spx_sig_t *y, int N, int ord, char *stack)
void	residue_percep_zero (const spx_sig_t *xx, const spx_coef_t *ak, const spx_coef_t *awk1, const spx_coef_t *awk2, spx_sig_t *y, int N, int ord, char *stack)
void	compute_impulse_response (const spx_coef_t *ak, const spx_coef_t *awk1, const spx_coef_t *awk2, spx_word16_t *y, int N, int ord, char *stack)
void	qmf_decomp (const spx_word16_t *xx, const spx_word16_t *aa, spx_sig_t *y1, spx_sig_t *y2, int N, int M, spx_word16_t *mem, char *stack)
void	fir_mem_up (const spx_sig_t *x, const spx_word16_t *a, spx_sig_t *y, int N, int M, spx_word32_t *mem, char *stack)
void	comb_filter_mem_init (CombFilterMem *mem)
void	comb_filter (spx_sig_t *exc, spx_sig_t *new_exc, spx_coef_t *ak, int p, int nsf, int pitch, spx_word16_t *pitch_gain, spx_word16_t comb_gain, CombFilterMem *mem)

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Define Documentation

#define COMB_STEP   1.0

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Function Documentation

void bw_lpc	(	spx_word16_t	gamma,
		const spx_coef_t *	lpc_in,
		spx_coef_t *	lpc_out,
		int	order
	)

void comb_filter	(	spx_sig_t *	exc,
		spx_sig_t *	new_exc,
		spx_coef_t *	ak,
		int	p,
		int	nsf,
		int	pitch,
		spx_word16_t *	pitch_gain,
		spx_word16_t	comb_gain,
		CombFilterMem *	mem
	)

void comb_filter_mem_init

(

CombFilterMem *

mem

)

void compute_impulse_response	(	const spx_coef_t *	ak,
		const spx_coef_t *	awk1,
		const spx_coef_t *	awk2,
		spx_word16_t *	y,
		int	N,
		int	ord,
		char *	stack
	)

spx_word16_t compute_rms	(	const spx_sig_t *	x,
		int	len
	)

void filter_mem2	(	const spx_sig_t *	x,
		const spx_coef_t *	num,
		const spx_coef_t *	den,
		spx_sig_t *	y,
		int	N,
		int	ord,
		spx_mem_t *	mem
	)

void fir_mem2	(	const spx_sig_t *	x,
		const spx_coef_t *	num,
		spx_sig_t *	y,
		int	N,
		int	ord,
		spx_mem_t *	mem
	)

void fir_mem_up	(	const spx_sig_t *	x,
		const spx_word16_t *	a,
		spx_sig_t *	y,
		int	N,
		int	M,
		spx_word32_t *	mem,
		char *	stack
	)

void iir_mem2	(	const spx_sig_t *	x,
		const spx_coef_t *	den,
		spx_sig_t *	y,
		int	N,
		int	ord,
		spx_mem_t *	mem
	)

void qmf_decomp	(	const spx_word16_t *	xx,
		const spx_word16_t *	aa,
		spx_sig_t *	y1,
		spx_sig_t *	y2,
		int	N,
		int	M,
		spx_word16_t *	mem,
		char *	stack
	)

void residue_percep_zero	(	const spx_sig_t *	xx,
		const spx_coef_t *	ak,
		const spx_coef_t *	awk1,
		const spx_coef_t *	awk2,
		spx_sig_t *	y,
		int	N,
		int	ord,
		char *	stack
	)

void signal_div	(	const spx_sig_t *	x,
		spx_sig_t *	y,
		spx_word32_t	scale,
		int	len
	)

void signal_mul	(	const spx_sig_t *	x,
		spx_sig_t *	y,
		spx_word32_t	scale,
		int	len
	)

void syn_percep_zero	(	const spx_sig_t *	xx,
		const spx_coef_t *	ak,
		const spx_coef_t *	awk1,
		const spx_coef_t *	awk2,
		spx_sig_t *	y,
		int	N,
		int	ord,
		char *	stack
	)

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