FreeCalypso > hg > gsm-codec-lib

annotate libtwamr/residu.h @ 499:446a4a2955ba

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
libgsmhr1/typedefs.h: initial port
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 19 Jun 2024 00:50:29 +0000
parents a2351f2ad4f8
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
393
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 ********************************************************************************
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 *
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 * R99 Version 3.3.0
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 * REL-4 Version 4.1.0
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 *
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 ********************************************************************************
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 *
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 * File : residu.h
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 * Purpose : Computes the LP residual.
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 * Description : The LP residual is computed by filtering the input
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 * : speech through the LP inverse filter A(z).
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 *
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 *
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 ********************************************************************************
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 */
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 #ifndef residu_h
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 #define residu_h "$Id $"
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 /*
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 ********************************************************************************
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 * INCLUDE FILES
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 ********************************************************************************
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 */
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 #include "typedef.h"
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 /*
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 ********************************************************************************
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 * DEFINITION OF DATA TYPES
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 ********************************************************************************
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 */
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 /*
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 ********************************************************************************
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 * DECLARATION OF PROTOTYPES
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 ********************************************************************************
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 */
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 void Residu (
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 Word16 a[], /* (i) : prediction coefficients */
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 Word16 x[], /* (i) : speech signal */
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 Word16 y[], /* (o) : residual signal */
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 Word16 lg /* (i) : size of filtering */
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 );
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46
a2351f2ad4f8 libtwamr: integrate residu.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 #endif