filters.h
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#ifndef FILTERS_H
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#define FILTERS_H
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#include "misc.h"
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spx_word16_t compute_rms(
const spx_sig_t *x,
int len);
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void signal_mul(
const spx_sig_t *x,
spx_sig_t *y,
spx_word32_t scale,
int len);
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void signal_div(
const spx_sig_t *x,
spx_sig_t *y,
spx_word32_t scale,
int len);
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#ifdef FIXED_POINT
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int normalize16(
const spx_sig_t *x,
spx_word16_t *y,
int max_scale,
int len);
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#endif
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00048 typedef struct CombFilterMem {
00049 int last_pitch;
00050 spx_word16_t last_pitch_gain[3];
00051 spx_word16_t smooth_gain;
00052 }
CombFilterMem;
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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);
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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);
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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);
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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);
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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);
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void bw_lpc(
spx_word16_t gamma,
const spx_coef_t *lpc_in,
spx_coef_t *lpc_out,
int order);
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void syn_percep_zero(
const spx_sig_t *x,
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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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);
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void comb_filter_mem_init (
CombFilterMem *mem);
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void comb_filter(
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spx_sig_t *exc,
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spx_sig_t *new_exc,
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spx_coef_t *ak,
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int p,
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int nsf,
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int pitch,
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spx_word16_t *pitch_gain,
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spx_word16_t comb_gain,
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CombFilterMem *mem
00084 );
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#endif
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