www.pudn.com > 200411301125332697.rar > vad.h

/* 
   ITU-T G.729 Annex B     ANSI-C Source Code 
   Version 1.3    Last modified: August 1997 
 
   Copyright (c) 1996, France Telecom, Rockwell International, 
                       Universite de Sherbrooke. 
   All rights reserved. 
*/ 
 
#define     NP            12                  /* Increased LPC order */ 
#define     NOISE         0 
#define     VOICE         1 
#define     INIT_FRAME    32 
#define     INIT_COUNT    20 
#define     ZC_START      120 
#define     ZC_END        200 
 
void vad_init(void); 
 
void vad( 
         Word16 rc, 
         Word16 *lsf,  
         Word16 *r_h, 
         Word16 *r_l, 
         Word16 exp_R0, 
         Word16 *sigpp, 
         Word16 frm_count, 
         Word16 prev_marker, 
         Word16 pprev_marker, 
         Word16 *marker);