1b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/* ------------------------------------------------------------------ 2b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * Copyright (C) 1998-2009 PacketVideo 3b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * 4b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * Licensed under the Apache License, Version 2.0 (the "License"); 5b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * you may not use this file except in compliance with the License. 6b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * You may obtain a copy of the License at 7b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * 8b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * http://www.apache.org/licenses/LICENSE-2.0 9b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * 10b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * Unless required by applicable law or agreed to in writing, software 11b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * distributed under the License is distributed on an "AS IS" BASIS, 12b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either 13b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * express or implied. 14b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * See the License for the specific language governing permissions 15b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * and limitations under the License. 16b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * ------------------------------------------------------------------- 17b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber */ 18b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/**************************************************************************************** 19b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas HuberPortions of this file are derived from the following 3GPP standard: 20b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 21b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 3GPP TS 26.073 22b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber ANSI-C code for the Adaptive Multi-Rate (AMR) speech codec 23b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Available from http://www.3gpp.org 24b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 25b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber(C) 2004, 3GPP Organizational Partners (ARIB, ATIS, CCSA, ETSI, TTA, TTC) 26b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas HuberPermission to distribute, modify and use this file under the standard license 27b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huberterms listed above has been obtained from the copyright holder. 28b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber****************************************************************************************/ 29b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/* 30b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 31b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 32b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 33b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 34b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Pathname: ./audio/gsm-amr/c/src/spreproc.c 35b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Functions: subframePreProc 36b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 37b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Date: 02/06/2002 38b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 39b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 40b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber REVISION HISTORY 41b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 42b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Description: Updated template used to PV coding template. 43b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Eliminated unnecessary use of the sub() function. 44b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 45b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Description: 46b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 1. Replaced copy() and for-loop with more efficient memcpy(). 47b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 2. Eliminated unused include file copy.h. 48b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 49b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Description: Replaced OSCL mem type functions and eliminated include 50b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber files that now are chosen by OSCL definitions 51b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 52b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Description: Replaced "int" and/or "char" with OSCL defined types. 53b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 54b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Description: 55b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 56b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 57b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber MODULE DESCRIPTION 58b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 59b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 60b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 61b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber*/ 62b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 63b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/*---------------------------------------------------------------------------- 64b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; INCLUDES 65b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber----------------------------------------------------------------------------*/ 66b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#include <string.h> 67b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 68b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#include "spreproc.h" 69b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#include "typedef.h" 70b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#include "weight_a.h" 71b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#include "syn_filt.h" 72b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber#include "residu.h" 73b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 74b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/*---------------------------------------------------------------------------- 75b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; MACROS 76b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; Define module specific macros here 77b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber----------------------------------------------------------------------------*/ 78b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 79b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/*---------------------------------------------------------------------------- 80b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; DEFINES 81b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; Include all pre-processor statements here. Include conditional 82b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; compile variables also. 83b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber----------------------------------------------------------------------------*/ 84b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 85b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/*---------------------------------------------------------------------------- 86b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; LOCAL FUNCTION DEFINITIONS 87b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; Function Prototype declaration 88b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber----------------------------------------------------------------------------*/ 89b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 90b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/*---------------------------------------------------------------------------- 91b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; LOCAL VARIABLE DEFINITIONS 92b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber; Variable declaration - defined here and used outside this module 93b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber----------------------------------------------------------------------------*/ 94b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 95b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber/* 96b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 97b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber FUNCTION NAME: subframePreProc 98b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 99b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber INPUT AND OUTPUT DEFINITIONS 100b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 101b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Inputs: 102b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber mode -- enum Mode -- coder mode 103b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber gamma1 -- const Word16 array -- spectral exp. factor 1 104b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber gamma1_12k2 -- const Word16 array -- spectral exp. factor 1 for EFR 105b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber gamma2 -- const Word16 array -- spectral exp. factor 2 106b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber A -- Pointer to Word16 -- A(z) unquantized for the 4 subframes 107b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Aq -- Pointer to Word16 -- A(z) quantized for the 4 subframes 108b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber speech -- Pointer to Word16 -- speech segment 109b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber mem_err -- Pointer to Word16 -- pointer to error signal 110b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber mem_w0 -- Pointer to Word16 -- memory of weighting filter 111b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber zero -- Pointer to Word16 -- pointer to zero vector 112b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 113b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Outputs: 114b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber ai_zero -- Word16 array -- history of weighted synth. filter 115b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber exc -- Word16 array -- long term prediction residual 116b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber h1 -- Word16 array -- impulse response 117b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber xn -- Word16 array -- target vector for pitch search 118b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber res2 -- Word16 array -- long term prediction residual 119b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber error -- Word16 array -- error of LPC synthesis filter 120b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 121b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Returns: 122b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Zero 123b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 124b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Global Variables Used: 125b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber None 126b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 127b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Local Variables Needed: 128b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber None 129b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 130b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 131b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber FUNCTION DESCRIPTION 132b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 133b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 134b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 135b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber REQUIREMENTS 136b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 137b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber None 138b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 139b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 140b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber REFERENCES 141b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 142b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber spreproc.c, UMTS GSM AMR speech codec, R99 - Version 3.2.0, March 2, 2001 143b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 144b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 145b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber PSEUDO-CODE 146b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 147b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 148b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 149b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber RESOURCES USED [optional] 150b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 151b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber When the code is written for a specific target processor the 152b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber the resources used should be documented below. 153b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 154b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber HEAP MEMORY USED: x bytes 155b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 156b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber STACK MEMORY USED: x bytes 157b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 158b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber CLOCK CYCLES: (cycle count equation for this function) + (variable 159b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber used to represent cycle count for each subroutine 160b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber called) 161b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber where: (cycle count variable) = cycle count for [subroutine 162b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber name] 163b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 164b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 165b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber CAUTION [optional] 166b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber [State any special notes, constraints or cautions for users of this function] 167b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 168b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber------------------------------------------------------------------------------ 169b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber*/ 170b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 171b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Hubervoid subframePreProc( 172b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber enum Mode mode, /* i : coder mode */ 173b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber const Word16 gamma1[], /* i : spectral exp. factor 1 */ 174b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber const Word16 gamma1_12k2[],/* i : spectral exp. factor 1 for EFR */ 175b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber const Word16 gamma2[], /* i : spectral exp. factor 2 */ 176b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 *A, /* i : A(z) unquantized for the 4 subframes */ 177b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 *Aq, /* i : A(z) quantized for the 4 subframes */ 178b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 *speech, /* i : speech segment */ 179b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 *mem_err, /* i : pointer to error signal */ 180b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 *mem_w0, /* i : memory of weighting filter */ 181b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 *zero, /* i : pointer to zero vector */ 182b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 ai_zero[], /* o : history of weighted synth. filter */ 183b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 exc[], /* o : long term prediction residual */ 184b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 h1[], /* o : impulse response */ 185b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 xn[], /* o : target vector for pitch search */ 186b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 res2[], /* o : long term prediction residual */ 187b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 error[] /* o : error of LPC synthesis filter */ 188b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber) 189b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber{ 190b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 Ap1[MP1]; /* A(z) with spectral expansion */ 191b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Word16 Ap2[MP1]; /* A(z) with spectral expansion */ 192b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber const Word16 *g1; /* Pointer to correct gammma1 vector */ 193b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 194b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /* mode specific pointer to gamma1 values */ 195b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber if (mode == MR122 || mode == MR102) 196b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 197b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber g1 = gamma1_12k2; 198b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 199b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber else 200b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber { 201b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber g1 = gamma1; 202b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber } 203b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 204b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /* Find the weighted LPC coefficients for the weighting filter. */ 205b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Weight_Ai(A, g1, Ap1); 206b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Weight_Ai(A, gamma2, Ap2); 207b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 208b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber memcpy(ai_zero, Ap1, (M + 1)*sizeof(Word16)); 209b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 210b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 211b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Syn_filt(Aq, ai_zero, h1, L_SUBFR, zero, 0); 212b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Syn_filt(Ap2, h1, h1, L_SUBFR, zero, 0); 213b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 214b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /* 215b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * 216b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * Find the target vector for pitch search: 217b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber * 218b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber */ 219b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 220b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /* LPC residual */ 221b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Residu(Aq, speech, res2, L_SUBFR); 222b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 223b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber memcpy(exc, res2, L_SUBFR*sizeof(Word16)); 224b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 225b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Syn_filt(Aq, exc, error, L_SUBFR, mem_err, 0); 226b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 227b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Residu(Ap1, error, xn, L_SUBFR); 228b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 229b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber /* target signal xn[]*/ 230b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber Syn_filt(Ap2, xn, xn, L_SUBFR, mem_w0, 0); 231b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 232b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber return; 233b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber 234b841f14f8e51f2365945281fbfa54ef6a1b1b5a6Andreas Huber} 235