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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
Speaker Recognition Experiment

Seungchan Lee

Intelligent Electronic Systems

Human and Systems Engineering

Department of Electrical and Computer Engineering

slide2
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
slide3
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.

slide4
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.

slide5
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

},

………………………………

slide6
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;

slide7
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)

slide8
DET Curve

DET Curve (Tang’s)

Probability Plot

slide9
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
slide10
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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