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annotate libtwamr/syn_filt.h @ 466:0c4e1bc06740

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amrefr-encode-r: use the new DHF xform that matches T-Mobile
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 12 May 2024 21:44:59 +0000
parents 2af94ba0c075
children
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2af94ba0c075 libtwamr: integrate syn_filt.c
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1 /*
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2 ********************************************************************************
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3 *
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4 * GSM AMR-NB speech codec R98 Version 7.6.0 December 12, 2001
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5 * R99 Version 3.3.0
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6 * REL-4 Version 4.1.0
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7 *
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8 ********************************************************************************
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9 *
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10 * File : syn_filt.h
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11 * Purpose : Perform synthesis filtering through 1/A(z).
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12 *
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13 *
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14 ********************************************************************************
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15 */
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16 #ifndef syn_filt_h
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17 #define syn_filt_h "$Id $"
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18
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19 /*
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20 ********************************************************************************
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21 * INCLUDE FILES
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22 ********************************************************************************
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23 */
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24 #include "typedef.h"
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25
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26 /*
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27 ********************************************************************************
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28 * DEFINITION OF DATA TYPES
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29 ********************************************************************************
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30 */
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31
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32 /*
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33 ********************************************************************************
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34 * DECLARATION OF PROTOTYPES
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35 ********************************************************************************
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36 */
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37
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38 void Syn_filt (
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39 Word16 a[], /* (i) : a[m+1] prediction coefficients (m=10) */
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40 Word16 x[], /* (i) : input signal */
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41 Word16 y[], /* (o) : output signal */
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42 Word16 lg, /* (i) : size of filtering */
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43 Word16 mem[], /* (i/o): memory associated with this filtering. */
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44 Word16 update /* (i) : 0=no update, 1=update of memory. */
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45 );
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46
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47 #endif