/****************************************************************** | |
iLBC Speech Coder ANSI-C Source Code | |
LPC_decode.h | |
Copyright (C) The Internet Society (2004). | |
All Rights Reserved. | |
******************************************************************/ | |
#ifndef __iLBC_LPC_DECODE_H | |
#define __iLBC_LPC_DECODE_H | |
void LSFinterpolate2a_dec( | |
float *a, /* (o) lpc coefficients for a sub-frame */ | |
float *lsf1, /* (i) first lsf coefficient vector */ | |
float *lsf2, /* (i) second lsf coefficient vector */ | |
float coef, /* (i) interpolation weight */ | |
int length /* (i) length of lsf vectors */ | |
); | |
void SimplelsfDEQ( | |
float *lsfdeq, /* (o) dequantized lsf coefficients */ | |
int *index, /* (i) quantization index */ | |
int lpc_n /* (i) number of LPCs */ | |
); | |
void DecoderInterpolateLSF( | |
float *syntdenum, /* (o) synthesis filter coefficients */ | |
float *weightdenum, /* (o) weighting denumerator | |
coefficients */ | |
float *lsfdeq, /* (i) dequantized lsf coefficients */ | |
int length, /* (i) length of lsf coefficient vector */ | |
iLBC_Dec_Inst_t *iLBCdec_inst | |
/* (i) the decoder state structure */ | |
); | |
#endif | |