00001 /* 00002 This file is part of LIA_RAL which is a set of software based on ALIZE 00003 toolkit for speaker recognition. ALIZE toolkit is required to use LIA_RAL. 00004 00005 LIA_RAL project is a development project was initiated by the computer 00006 science laboratory of Avignon / France (Laboratoire Informatique d'Avignon - 00007 LIA) [http://lia.univ-avignon.fr <http://lia.univ-avignon.fr/>]. Then it 00008 was supported by two national projects of the French Research Ministry: 00009 - TECHNOLANGUE program [http://www.technolangue.net] 00010 - MISTRAL program [http://mistral.univ-avignon.fr] 00011 00012 LIA_RAL is free software: you can redistribute it and/or modify 00013 it under the terms of the GNU Lesser General Public License as 00014 published by the Free Software Foundation, either version 3 of 00015 the License, or any later version. 00016 00017 LIA_RAL is distributed in the hope that it will be useful, 00018 but WITHOUT ANY WARRANTY; without even the implied warranty of 00019 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00020 GNU Lesser General Public License for more details. 00021 00022 You should have received a copy of the GNU Lesser General Public 00023 License along with LIA_RAL. 00024 If not, see [http://www.gnu.org/licenses/]. 00025 00026 The LIA team as well as the LIA_RAL project team wants to highlight the 00027 limits of voice authentication in a forensic context. 00028 The "Person Authentification by Voice: A Need of Caution" paper 00029 proposes a good overview of this point (cf. "Person 00030 Authentification by Voice: A Need of Caution", Bonastre J.F., 00031 Bimbot F., Boe L.J., Campbell J.P., Douglas D.A., Magrin- 00032 chagnolleau I., Eurospeech 2003, Genova]. 00033 The conclusion of the paper of the paper is proposed bellow: 00034 [Currently, it is not possible to completely determine whether the 00035 similarity between two recordings is due to the speaker or to other 00036 factors, especially when: (a) the speaker does not cooperate, (b) there 00037 is no control over recording equipment, (c) recording conditions are not 00038 known, (d) one does not know whether the voice was disguised and, to a 00039 lesser extent, (e) the linguistic content of the message is not 00040 controlled. Caution and judgment must be exercised when applying speaker 00041 recognition techniques, whether human or automatic, to account for these 00042 uncontrolled factors. Under more constrained or calibrated situations, 00043 or as an aid for investigative purposes, judicious application of these 00044 techniques may be suitable, provided they are not considered as infallible. 00045 At the present time, there is no scientific process that enables one to 00046 uniquely characterize a persones voice or to identify with absolute 00047 certainty an individual from his or her voice.] 00048 00049 Copyright (C) 2004-2010 00050 Laboratoire d'informatique d'Avignon [http://lia.univ-avignon.fr] 00051 LIA_RAL admin [alize@univ-avignon.fr] 00052 Jean-Francois Bonastre [jean-francois.bonastre@univ-avignon.fr] 00053 */ 00054 00055 #if !defined(ALIZE_AccumulateStat_h) 00056 #define ALIZE_AccumulateStat_h 00057 00058 #if defined(_WIN32) 00059 #if defined(LIA_SPKTOOLS_EXPORTS) 00060 #define LIA_SPKTOOLS_API __declspec(dllexport) 00061 #else 00062 #define LIA_SPKTOOLS_API __declspec(dllimport) 00063 #endif 00064 #else 00065 #define LIA_SPKTOOLS_API 00066 #endif 00067 00068 #include <alize.h> 00069 #include "liatools.h" 00070 using namespace alize; 00071 using namespace std; 00072 00073 00074 //------------------------------------------------------------------------- 00075 //-- Accumulate the log likelihood for the selected frames and a given llk statistic accumulator 00076 LIA_SPKTOOLS_API void accumulateStatLLK(StatServer &ss,FeatureServer &fs,MixtureStat &llkAcc, unsigned long idxBeginFrame,unsigned long nbFrames, 00077 Config &config); 00078 // one a Segment 00079 LIA_SPKTOOLS_API void accumulateStatLLK(StatServer &ss,FeatureServer &fs,MixtureStat &llkAcc,Seg* seg,Config &config); 00080 // One on Cluster 00081 LIA_SPKTOOLS_API void accumulateStatLLK(StatServer &ss,FeatureServer &fs,MixtureStat &llkAcc,SegCluster &selectedSegments,Config &config); 00082 00083 //------------------------------------------------------------------------- 00084 //-- Accumulate the log likelihood for the selected frames and a given llk statistic accumulator 00085 LIA_SPKTOOLS_API void accumulateStatLLK(StatServer &ss,FeatureServer &fs,MixtureStat &llkAcc, unsigned long idxBeginFrame,unsigned long nbFrames,double &weight, 00086 Config &config); 00087 // one a Segment 00088 LIA_SPKTOOLS_API void accumulateStatLLK(StatServer &ss,FeatureServer &fs,MixtureStat &llkAcc,Seg* seg,double &weight,Config &config); 00089 // One on Cluster 00090 LIA_SPKTOOLS_API void accumulateStatLLK(StatServer &ss,FeatureServer &fs,MixtureStat &llkAcc,SegCluster &selectedSegments,double &weight,Config &config); 00091 00092 //------------------------------------------------------------------------- 00093 //-- accumulate the statistic for EM, using a current accumulator 00094 //-- CAUTION: THE ACCUMULATOR SHOULD BE INITIALIZED (resetEM) BEFORE THE CALL 00095 //-- A GET CALL SHOULD BE DONE AFTER THE CALL 00096 // One a part of the feature stream 00097 LIA_SPKTOOLS_API double accumulateStatEM(StatServer &ss,FeatureServer &fs,MixtureStat &emAcc, 00098 unsigned long idxBeginFrame,unsigned long nbFrames,Config &config); 00099 // one a Segment 00100 LIA_SPKTOOLS_API double accumulateStatEM(StatServer &ss,FeatureServer &fs,MixtureStat &emAcc,Seg* seg,Config &config); 00101 // One on Cluster 00102 LIA_SPKTOOLS_API double accumulateStatEM(StatServer &ss,FeatureServer &fs,MixtureStat &emAcc,SegCluster &selectedSegments,Config &config); 00103 00104 // This is internal, you should only call accumulateStatEM 00105 // Threaded version 00106 #if defined(THREAD) 00107 LIA_SPKTOOLS_API double accumulateStatEMThreaded(StatServer &ss,FeatureServer &fs,MixtureStat &emAcc,SegCluster &selectedSegments,Config &config); 00108 #endif 00109 // UnThreaded version 00110 LIA_SPKTOOLS_API double accumulateStatEMUnThreaded(StatServer &ss,FeatureServer &fs,MixtureStat &emAcc,SegCluster &selectedSegments,Config &config); 00111 // Weighted Version 00112 LIA_SPKTOOLS_API double accumulateStatEM(StatServer &ss,FeatureServer &fs,MixtureStat &emAcc,SegCluster &selectedSegments,double & weight, Config &config); 00113 00114 /* Alex Preti things 00115 double accumulateStatEM(StatServer &ss,FeatureServer &fs,MixtureStat &emAcc, 00116 unsigned long idxBeginFrame,unsigned long nbFrames,double &weight,Config &config); 00117 // one a Segment 00118 double accumulateStatEM(StatServer &ss,FeatureServer &fs,MixtureStat &emAcc,Seg* seg,double &weight,Config &config); 00119 // One on Cluster 00120 double accumulateStatEM(StatServer &ss,FeatureServer &fs,MixtureStat &emAcc,SegCluster &selectedSegments,double &weight,Config &config);*/ 00121 00122 //------------------------------------------------------------------------- 00123 //-- accumulate the statistic on the frames (mean and cov), using a current 00124 //-- FrameAcc 00125 //-- CAUTION: THE ACCUMULATOR SHOULD BE INITIALIZED BEFORE THE FIRST CALL 00126 //-- A COMPUTE_ALL AND A GET CALL SHOULD BE DONE AFTER THE CALLS 00127 LIA_SPKTOOLS_API void accumulateStatFrame(FrameAcc & frameAcc,FeatureServer &fs, 00128 unsigned long idxBeginFrame,unsigned long nbFrames,Config &config); 00129 // one a Segment 00130 LIA_SPKTOOLS_API void accumulateStatFrame(FrameAcc & frameAcc,FeatureServer &fs,Seg* seg,Config &config); 00131 // One on Cluster 00132 LIA_SPKTOOLS_API void accumulateStatFrame(FrameAcc &frameAcc,FeatureServer &fs,SegCluster &selectedSegments,Config &config); 00133 00134 00135 //------------------------------------------------------------------------- 00136 //-- accumulate the statistic on the frames raw distribution of each coefficient using a current 00137 //-- CAUTION: 00138 // *THE ACCUMULATOR SHOULD BE INITIALIZED BEFORE THE FIRST CALL 00139 // initHistoTab() 00140 // *THE HISTO SHOULD BE COMPUTED BEFORE TO USE THE STAT 00141 // computeHistoTab() 00142 // *The histoTab should be freezen after use 00143 // freezeHistoTab(); 00144 // 00145 // Init the Histo array (one by coeff) 00146 LIA_SPKTOOLS_API double areaHisto(const Histo & histo,unsigned long bin); 00147 LIA_SPKTOOLS_API double areaHisto(const Histo & histo,unsigned long bin, double nonObserved); 00148 LIA_SPKTOOLS_API double linearInterpolation(double val,double lower,double higher); 00149 LIA_SPKTOOLS_API void freezeHistoTab(Histo* &histoT); 00150 LIA_SPKTOOLS_API void initHistoTab(Histo* &histoT,unsigned long size, unsigned long nbBins); 00151 //void resetHistoTab(Histo* histoT,unsigned long size); 00152 LIA_SPKTOOLS_API void computeHistoTab(Histo* histoT,unsigned long size); 00153 LIA_SPKTOOLS_API void accumulateHistoFrame(Histo *histoT,FeatureServer &fs, 00154 unsigned long idxBeginFrame,unsigned long nbFrames,Config &config); 00155 // one a Segment 00156 LIA_SPKTOOLS_API void accumulateHistoFrame(Histo *histoT,FeatureServer &fs,Seg* seg,Config &config); 00157 // One on Cluster 00158 LIA_SPKTOOLS_API void accumulateHistoFrame(Histo *histoT,FeatureServer &fs,SegCluster &selectedSegments,Config &config); 00159 00160 00161 #endif //!defined(ALIZE_AccumulateStat_h)
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