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Speaker Recognition Experiment

Speaker Recognition Experiment. Seungchan Lee Intelligent Electronic Systems Human and Systems Engineering Department of Electrical and Computer Engineering. Overview. Software Release lm_tester, network_builder Debugging utility : Purify HierarchicalSearch Class

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Speaker Recognition Experiment

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  1. Speaker Recognition Experiment Seungchan Lee Intelligent Electronic Systems Human and Systems Engineering Department of Electrical and Computer Engineering

  2. Overview • Software Release • lm_tester, network_builder • Debugging utility : Purify • HierarchicalSearch Class • Speaker Recognition System • Do Experiment with HMM using the MFCCs • Adding invariants in the feature file • Next Plans

  3. 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.

  4. 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.

  5. 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. @ Sof v1.0 @ @ FeatureFile 0 @ name = "FEATURES"; file_type = "TEXT"; file_format = "SOF"; ………………………….. values = { 11.502,11.4683,12.1384,10.292,5.05849,8.20064,3.72829,8.71881,0.655161,4.4856 ,1.29329,-1.04087,-24.0325 }, { 11.502,11.4683,12.1384,10.292,5.05849,8.20064,3.72829,8.71881,0.655161,4.4856 ,1.29329,-1.04087,-24.0325 }, { 11.502,11.4683,12.1384,10.292,5.05849,8.20064,3.72829,8.71881,0.655161,4.4856 ,1.29329,-1.04087,-24.0325 }, ………………………………

  6. 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;

  7. 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. MFCC Feature Test Utterance Test Utterance IHD, 16 Mixture model JSGF, 16 Mixture model ACCEPTED: 1.70586e-05 (KAAA) REJECTED: -0.000698179 (KAAB) ACCEPTED: 2.19704e-05 (KAAC) REJECTED: -0.00218273 (KAAD) REJECTED: -0.000529905 (KAAG) ACCEPTED: 0.000170417 (KAAH) REJECTED: -0.000673878 (KAAJ) REJECTED: -0.842606 (KAAA) REJECTED: -2.53688 (KAAB) REJECTED: -0.827423 (KAAC) REJECTED: -0.803932 (KAAD) REJECTED: -1.15936 (KAAG) REJECTED: -1.00537 (KAAH) REJECTED: -0.555092 (KAAJ)

  8. DET Curve DET Curve (Tang’s) Probability Plot

  9. Next Plan • Software Release • Help Daniel to finish the release. • Speaker Recognition 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

  10. 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)

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