1 /* 2 * Copyright (c) 2011 The WebRTC project authors. All Rights Reserved. 3 * 4 * Use of this source code is governed by a BSD-style license 5 * that can be found in the LICENSE file in the root of the source 6 * tree. An additional intellectual property rights grant can be found 7 * in the file PATENTS. All contributing project authors may 8 * be found in the AUTHORS file in the root of the source tree. 9 */ 10 11 /****************************************************************** 12 13 iLBC Speech Coder ANSI-C Source Code 14 15 WebRtcIlbcfix_HpOutput.h 16 17 ******************************************************************/ 18 19 #ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_HP_OUTPUT_H_ 20 #define WEBRTC_MODULES_AUDIO_CODING_CODECS_ILBC_MAIN_SOURCE_HP_OUTPUT_H_ 21 22 #include "defines.h" 23 24 void WebRtcIlbcfix_HpOutput( 25 int16_t *signal, /* (i/o) signal vector */ 26 int16_t *ba, /* (i) B- and A-coefficients (2:nd order) 27 {b[0] b[1] b[2] -a[1] -a[2]} a[0] 28 is assumed to be 1.0 */ 29 int16_t *y, /* (i/o) Filter state yhi[n-1] ylow[n-1] 30 yhi[n-2] ylow[n-2] */ 31 int16_t *x, /* (i/o) Filter state x[n-1] x[n-2] */ 32 size_t len); /* (i) Number of samples to filter */ 33 34 #endif 35
