Seungchan Lee Intelligent Electronic Systems Human and Systems Engineering Department of Electrical and Computer Engineering Speaker Verification Experiment Research Presentation:

ISIP: Research Presentation Page 1 of 9 Overview Software Release  lm_tester, network_builder  Debugging utility : Purify  HierarchicalSearch Class Speaker Verification System  Do Experiment with HMM using the MFCCs  Adding invariants in the feature file Next Plans

ISIP: Research Presentation Page 2 of 9 Software Release Purify  Resolve Compilation problem -Compile without sphere utility  Track down memory problem -Resolve HierarchicalSearch class problem Namemap problem  This is caused by the difference of the system which extract features and train the feature files.

ISIP: Research Presentation Page 3 of 9 Baseline system set up Set up Baseline system  It takes much time to set up the baseline system at this time.  It will be faster at the next experiment. Problems with Adding invariants  Transform_builder  Window Class  Lyapunov exponent  The result recipe sof file has some problems.  Every result feature vector has the same value.  Sundar helps me to add the Lyapunov exponent, we did not find the reason.

ISIP: Research Presentation Page 4 of 9 Baseline system set up Set up Baseline system  It takes much time to set up the baseline system at this time.  It will be faster at the next experiment. Problems with Adding invariants  Transform_builder  Window Class  Lyapunov exponent  The result recipe sof file has some problems.  Every result feature vector has the same value.  Sundar helps me to add the Lyapunov exponent, we did not find the FeatureFile name = "FEATURES"; file_type = "TEXT"; file_format = "SOF"; ………………………….. values = { , , ,10.292, , , , , ,4.4856, , , }, { , , ,10.292, , , , , ,4.4856, , , }, { , , ,10.292, , , , , ,4.4856, , , }, ………………………………

ISIP: Research Presentation Page 5 of 9 Baseline system set up Transform_builder problem Open existing recipe file and save as different recipe file.  Two recipe files are not the same.  Window class has been modified after saving  Ryan looked into this problem alignment = LEFT; normalization = NONE; compute_mode = CROSS_FRAME; duration = 0.025; debug_level = NONE; constants = LEFT; alignment = NONE; normalization = CROSS_FRAME; compute_mode = 0.025; duration = NONE;

ISIP: Research Presentation Page 6 of 9 Experiment Result Problems with hypothesis  The result hypothesis scores is highly less than previous result  The “ACCEPTED” and “REJECTED” hypothesis does not give correct decision. ACCEPTED: e-05 (KAAA) REJECTED: (KAAB) ACCEPTED: e-05 (KAAC) REJECTED: (KAAD) REJECTED: (KAAG) ACCEPTED: (KAAH) REJECTED: (KAAJ) REJECTED: (KAAA) REJECTED: (KAAB) REJECTED: (KAAC) REJECTED: (KAAD) REJECTED: (KAAG) REJECTED: (KAAH) REJECTED: (KAAJ) Test Utterance IHD, 16 Mixture modelJSGF, 16 Mixture model Test Utterance MFCC Feature

ISIP: Research Presentation Page 7 of 9 DET Curve DET Curve (Tang’s)Probability Plot

ISIP: Research Presentation Page 8 of 9 Next Plan Software Release  Help Daniel to finish the release. Speaker Verification System  Do Experiment with HMM using the MFCCs and invariants  Compare the result to previous result  Analyze the result and track down the problem Nonlinear System  Find the research topics

ISIP: Research Presentation Page 9 of 9 List of activities (Spring semester) Become familiar with our system  Make first simple program Software Release  Work with Daniel on the Software Release  ProductionRuleTokenType – modify read/write function with namemap class  lm_tester, network_builder  Dummy symbol, exclude symbol problem  Debugging utility : Purify  Resolve compilation problem ( without sphere utility)  Fix memory problem – segmentation fault (HierarchicalSearch class Speaker Verification System  Designing interface for Verification System  Combine three functionality, HMM/GMM, SVM, RVM  New isip_verify Utility  Resolve checksum error (namemap)