| /* ------------------------------------------------------------------ |
| * Copyright (C) 1998-2009 PacketVideo |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either |
| * express or implied. |
| * See the License for the specific language governing permissions |
| * and limitations under the License. |
| * ------------------------------------------------------------------- |
| */ |
| /**************************************************************************************** |
| Portions of this file are derived from the following 3GPP standard: |
| |
| 3GPP TS 26.073 |
| ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec |
| Available from http://www.3gpp.org |
| |
| (C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC) |
| Permission to distribute, modify and use this file under the standard license |
| terms listed above has been obtained from the copyright holder. |
| ****************************************************************************************/ |
| /* |
| ******************************************************************************** |
| * |
| * GSM AMR-NB speech codec R98 Version 7.5.0 March 2, 2001 |
| * R99 Version 3.2.0 |
| * REL-4 Version 4.0.0 |
| * |
| ******************************************************************************** |
| * |
| * File : residu.h |
| * Purpose : Computes the LP residual. |
| * Description : The LP residual is computed by filtering the input |
| * : speech through the LP inverse filter A(z). |
| * |
| * |
| ******************************************************************************** |
| */ |
| #ifndef residu_h |
| #define residu_h "$Id $" |
| |
| /* |
| ******************************************************************************** |
| * INCLUDE FILES |
| ******************************************************************************** |
| */ |
| #include "typedef.h" |
| |
| #ifdef __cplusplus |
| extern "C" |
| { |
| #endif |
| |
| /* |
| ******************************************************************************** |
| * DEFINITION OF DATA TYPES |
| ******************************************************************************** |
| */ |
| |
| /* |
| ******************************************************************************** |
| * DECLARATION OF PROTOTYPES |
| ******************************************************************************** |
| */ |
| void Residu( |
| Word16 a[], /* (i) : prediction coefficients */ |
| Word16 x[], /* (i) : speech signal */ |
| Word16 y[], /* (o) : residual signal */ |
| Word16 lg /* (i) : size of filtering */ |
| ); |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif |
