Asterisk - The Open Source Telephony Project
21.4.1
Main Page
Related Pages
Modules
Namespaces
Data Structures
Files
Examples
File List
Globals
codecs
ilbc
LPCdecode.h
1
2
/******************************************************************
3
4
iLBC Speech Coder ANSI-C Source Code
5
6
LPC_decode.h
7
8
Copyright (C) The Internet Society (2004).
9
All Rights Reserved.
10
11
******************************************************************/
12
13
#ifndef __iLBC_LPC_DECODE_H
14
#define __iLBC_LPC_DECODE_H
15
16
void
LSFinterpolate2a_dec(
17
float
*a,
/* (o) lpc coefficients for a sub-frame */
18
float
*lsf1,
/* (i) first lsf coefficient vector */
19
float
*lsf2,
/* (i) second lsf coefficient vector */
20
float
coef,
/* (i) interpolation weight */
21
int
length
/* (i) length of lsf vectors */
22
);
23
24
void
SimplelsfDEQ(
25
float
*lsfdeq,
/* (o) dequantized lsf coefficients */
26
int
*index,
/* (i) quantization index */
27
int
lpc_n
/* (i) number of LPCs */
28
);
29
30
void
DecoderInterpolateLSF(
31
float
*syntdenum,
/* (o) synthesis filter coefficients */
32
float
*weightdenum,
/* (o) weighting denumerator
33
coefficients */
34
float
*lsfdeq,
/* (i) dequantized lsf coefficients */
35
int
length,
/* (i) length of lsf coefficient vector */
36
iLBC_Dec_Inst_t
*iLBCdec_inst
37
/* (i) the decoder state structure */
38
);
39
40
#endif
iLBC_Dec_Inst_t_
Definition:
iLBC_define.h:167
Generated on Tue Jul 15 2025 11:50:41 for Asterisk - The Open Source Telephony Project by
1.8.10