lsp.c File Reference

#include <math.h>
#include "lsp.h"
#include "stack_alloc.h"
#include "math_approx.h"

Include dependency graph for lsp.c:

Defines
#define	M_PI   3.14159265358979323846
#define	NULL   0
#define	FREQ_SCALE   1.
#define	ANGLE2X(a)   (spx_cos(a))
#define	X2ANGLE(x)   (acos(x))
#define	SIGN_CHANGE(a, b)   (((a)*(b))<0.0)
Functions
int	lpc_to_lsp (spx_coef_t *a, int lpcrdr, spx_lsp_t *freq, int nb, spx_word16_t delta, char *stack)
void	lsp_to_lpc (spx_lsp_t *freq, spx_coef_t *ak, int lpcrdr, char *stack)
void	lsp_enforce_margin (spx_lsp_t *lsp, int len, spx_word16_t margin)
void	lsp_interpolate (spx_lsp_t *old_lsp, spx_lsp_t *new_lsp, spx_lsp_t *interp_lsp, int len, int subframe, int nb_subframes)

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Define Documentation

#define ANGLE2X

(

a

)

(spx_cos(a))

#define FREQ_SCALE   1.

#define M_PI   3.14159265358979323846

#define NULL   0

#define SIGN_CHANGE	(	a,
		b		)	(((a)*(b))<0.0)

#define X2ANGLE

(

x

)

(acos(x))

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Function Documentation

int lpc_to_lsp	(	spx_coef_t *	a,
		int	lpcrdr,
		spx_lsp_t *	freq,
		int	nb,
		spx_word16_t	delta,
		char *	stack
	)

void lsp_enforce_margin	(	spx_lsp_t *	lsp,
		int	len,
		spx_word16_t	margin
	)

void lsp_interpolate	(	spx_lsp_t *	old_lsp,
		spx_lsp_t *	new_lsp,
		spx_lsp_t *	interp_lsp,
		int	len,
		int	subframe,
		int	nb_subframes
	)

void lsp_to_lpc	(	spx_lsp_t *	freq,
		spx_coef_t *	ak,
		int	lpcrdr,
		char *	stack
	)

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