/******************************************************************       iLBC Speech Coder ANSI-C Source Code       enhancer.h       Copyright (C) The Internet Society (2004).       All Rights Reserved.   ******************************************************************/   #ifndef __ENHANCER_H   #define __ENHANCER_H   #include "iLBC_define.h"   float xCorrCoef(       float *target,      /* (i) first array */       float *regressor,   /* (i) second array */       int subl        /* (i) dimension arrays */   );   int enhancerInterface(       float *out,         /* (o) the enhanced recidual signal */       float *in,          /* (i) the recidual signal to enhance */       iLBC_Dec_Inst_t *iLBCdec_inst                           /* (i/o) the decoder state structure */   );   #endif