FreeCalypso > hg > gsm-codec-lib
annotate libtwamr/a_refl.h @ 468:4104b0390fab
efrtest: new program gsmefr-dlcap-sync
author | Mychaela Falconia <falcon@freecalypso.org> |
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date | Mon, 13 May 2024 07:21:09 +0000 |
parents | 54f6bc41ed10 |
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rev | line source |
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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 : a_refl.h |
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11 * Purpose : Convert from direct form coefficients to |
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12 * reflection coefficients |
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13 * |
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14 ******************************************************************************** |
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15 */ |
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16 #ifndef a_refl_h |
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17 #define a_refl_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 /************************************************************************* |
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39 * |
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40 * FUNCTION: A_Refl() |
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41 * |
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42 * PURPOSE: Convert from direct form coefficients to reflection coefficients |
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43 * |
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44 * DESCRIPTION: |
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45 * Directform coeffs in Q12 are converted to |
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46 * reflection coefficients Q15 |
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47 * |
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48 *************************************************************************/ |
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49 void A_Refl( |
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50 Word16 a[], /* i : Directform coefficients */ |
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51 Word16 refl[] /* o : Reflection coefficients */ |
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52 ); |
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53 |
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54 #endif |