ltp.h File Reference

Long-Term Prediction functions. More...

#include <speex/speex_bits.h>
#include "misc.h"

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Classes

struct  ltp_params

Defines

#define gain_3tap_to_1tap(g)   (ABS(g[1]) + (g[0]>0 ? g[0] : -.5*g[0]) + (g[2]>0 ? g[2] : -.5*g[2]))

Functions

void open_loop_nbest_pitch (spx_sig_t *sw, int start, int end, int len, int *pitch, spx_word16_t *gain, int N, char *stack)
int pitch_search_3tap (spx_sig_t target[], spx_sig_t *sw, spx_coef_t ak[], spx_coef_t awk1[], spx_coef_t awk2[], spx_sig_t exc[], const void *par, int start, int end, spx_word16_t pitch_coef, int p, int nsf, SpeexBits *bits, char *stack, spx_sig_t *exc2, spx_word16_t *r, int complexity, int cdbk_offset, int plc_tuning)
void pitch_unquant_3tap (spx_sig_t exc[], int start, int end, spx_word16_t pitch_coef, const void *par, int nsf, int *pitch_val, spx_word16_t *gain_val, SpeexBits *bits, char *stack, int lost, int subframe_offset, spx_word16_t last_pitch_gain, int cdbk_offset)
int forced_pitch_quant (spx_sig_t target[], spx_sig_t *sw, spx_coef_t ak[], spx_coef_t awk1[], spx_coef_t awk2[], spx_sig_t exc[], const void *par, int start, int end, spx_word16_t pitch_coef, int p, int nsf, SpeexBits *bits, char *stack, spx_sig_t *exc2, spx_word16_t *r, int complexity, int cdbk_offset, int plc_tuning)
void forced_pitch_unquant (spx_sig_t exc[], int start, int end, spx_word16_t pitch_coef, const void *par, int nsf, int *pitch_val, spx_word16_t *gain_val, SpeexBits *bits, char *stack, int lost, int subframe_offset, spx_word16_t last_pitch_gain, int cdbk_offset)


Detailed Description

Long-Term Prediction functions.


Define Documentation

#define gain_3tap_to_1tap (  )     (ABS(g[1]) + (g[0]>0 ? g[0] : -.5*g[0]) + (g[2]>0 ? g[2] : -.5*g[2]))


Function Documentation

int forced_pitch_quant ( spx_sig_t  target[],
spx_sig_t sw,
spx_coef_t  ak[],
spx_coef_t  awk1[],
spx_coef_t  awk2[],
spx_sig_t  exc[],
const void *  par,
int  start,
int  end,
spx_word16_t  pitch_coef,
int  p,
int  nsf,
SpeexBits *  bits,
char *  stack,
spx_sig_t exc2,
spx_word16_t r,
int  complexity,
int  cdbk_offset,
int  plc_tuning 
)

Forced pitch delay and gain

void forced_pitch_unquant ( spx_sig_t  exc[],
int  start,
int  end,
spx_word16_t  pitch_coef,
const void *  par,
int  nsf,
int *  pitch_val,
spx_word16_t gain_val,
SpeexBits *  bits,
char *  stack,
int  count_lost,
int  subframe_offset,
spx_word16_t  last_pitch_gain,
int  cdbk_offset 
)

Unquantize forced pitch delay and gain

void open_loop_nbest_pitch ( spx_sig_t sw,
int  start,
int  end,
int  len,
int *  pitch,
spx_word16_t gain,
int  N,
char *  stack 
)

int pitch_search_3tap ( spx_sig_t  target[],
spx_sig_t sw,
spx_coef_t  ak[],
spx_coef_t  awk1[],
spx_coef_t  awk2[],
spx_sig_t  exc[],
const void *  par,
int  start,
int  end,
spx_word16_t  pitch_coef,
int  p,
int  nsf,
SpeexBits *  bits,
char *  stack,
spx_sig_t exc2,
spx_word16_t r,
int  complexity,
int  cdbk_offset,
int  plc_tuning 
)

Finds the best quantized 3-tap pitch predictor by analysis by synthesis

void pitch_unquant_3tap ( spx_sig_t  exc[],
int  start,
int  end,
spx_word16_t  pitch_coef,
const void *  par,
int  nsf,
int *  pitch_val,
spx_word16_t gain_val,
SpeexBits *  bits,
char *  stack,
int  lost,
int  subframe_offset,
spx_word16_t  last_pitch_gain,
int  cdbk_offset 
)


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