lpc.h

AMR-NB 的编码实现,纯C, VC下建立工程即可用.

#ifndef LPC_H
#define  LPC_H

#include "AmrCode_Comm.h"


int lpc(  lpcState *st,   Mode mode,   Word16 x[],    Word16 x_12k2[],  Word16 a[]  );
void Lsf_wt (Word16 *lsf, Word16 *wf); 
int lsp(lspState *st,  Mode req_mode,  Mode used_mode,Word16 az[],Word16 azQ[],  Word16 lsp_new[],Word16 **anap );
void Lsp_Az (Word16 lsp[],   Word16 a[]);
void Lsp_lsf (Word16 lsp[],  Word16 lsf[],  Word16 m);

int Levinson ( LevinsonState *st,  Word16 Rh[], Word16 Rl[], Word16 A[],  Word16 rc[] );
void Q_plsf_3(Q_plsfState *st,Mode mode, Word16 *lsp1, Word16 *lsp1_q,Word16 *indice,Word16 *pred_init_i );
void Q_plsf_5 ( Q_plsfState *st,Word16 *lsp1, Word16 *lsp2,Word16 *lsp1_q,Word16 *lsp2_q, Word16 *indice );


#endif