constants.h

Ilibc 语音编解码库算法。语音质量高。接口简单。

   
   /******************************************************************
   
       iLBC Speech Coder ANSI-C Source Code
   
       constants.h
   
       Copyright (C) The Internet Society (2004). 
       All Rights Reserved.
   
   
   
   ******************************************************************/
   
   #ifndef __iLBC_CONSTANTS_H
   #define __iLBC_CONSTANTS_H
   
   #include "iLBC_define.h"
   
   
   /* ULP bit allocation */
   
   extern const iLBC_ULP_Inst_t ULP_20msTbl;
   extern const iLBC_ULP_Inst_t ULP_30msTbl;
   
   /* high pass filters */
   
   extern float hpi_zero_coefsTbl[];
   extern float hpi_pole_coefsTbl[];
   extern float hpo_zero_coefsTbl[];
   extern float hpo_pole_coefsTbl[];  
   
   /* low pass filters */
   extern float lpFilt_coefsTbl[];
   
   /* LPC analysis and quantization */
   
   extern float lpc_winTbl[];
   extern float lpc_asymwinTbl[];
   extern float lpc_lagwinTbl[];
   extern float lsfCbTbl[];
   extern float lsfmeanTbl[];
   extern int   dim_lsfCbTbl[];
   extern int   size_lsfCbTbl[];
   extern float lsf_weightTbl_30ms[]; 
   extern float lsf_weightTbl_20ms[];
   
   /* state quantization tables */
   
   extern float state_sq3Tbl[];
   extern float state_frgqTbl[];
   
   /* gain quantization tables */
   
   extern float gain_sq3Tbl[];
   extern float gain_sq4Tbl[];
   extern float gain_sq5Tbl[];
   
   /* adaptive codebook definitions */
   
   extern int search_rangeTbl[5][CB_NSTAGES];
   extern int memLfTbl[];
   extern int stMemLTbl;
   extern float cbfiltersTbl[CB_FILTERLEN];
   
   
   
   /* enhancer definitions */
   
   extern float polyphaserTbl[];
   extern float enh_plocsTbl[];
   
   #endif