annotate libtwamr/calc_cor.h @ 339:a723d9f9f697

libtwamr: integrate d_gain_c.c
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 18 Apr 2024 23:33:00 +0000
parents 67c31802392b
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
325
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 /*
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 ********************************************************************************
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 *
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5 * R99 Version 3.3.0
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 * REL-4 Version 4.1.0
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 *
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8 ********************************************************************************
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 *
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 * File : calc_cor.h
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 * Purpose : Calculate all correlations for prior the OL LTP
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 *
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 ********************************************************************************
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 */
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 #ifndef calc_cor_h
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 #define calc_cor_h "$Id $"
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 /*
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19 ********************************************************************************
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 * INCLUDE FILES
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 ********************************************************************************
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 */
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 #include "typedef.h"
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 /*
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26 ********************************************************************************
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 * DECLARATION OF PROTOTYPES
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 ********************************************************************************
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 */
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 /*************************************************************************
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31 *
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 * FUNCTION: comp_corr
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33 *
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 * PURPOSE: Calculate all correlations of scal_sig[] in a given delay
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 * range.
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 *
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37 * DESCRIPTION:
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 * The correlation is given by
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 * cor[t] = <scal_sig[n], scal_sig[n-t]>, t=lag_min,...,lag_max
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 * The functions outputs all correlations in the given range
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 *
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 *************************************************************************/
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 void comp_corr (Word16 scal_sig[], /* i : scaled signal. */
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 Word16 L_frame, /* i : length of frame to compute pitch */
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 Word16 lag_max, /* i : maximum lag */
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46 Word16 lag_min, /* i : minimum lag */
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 Word32 corr[] /* o : correlation of selected lag */
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 );
67c31802392b libtwamr: integrate calc_cor.c
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49 #endif