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專題研究 (2) HINIT + HREST + HEREST

專題研究 (2) HINIT + HREST + HEREST. Prof. Lin-Shan Lee, TA. Yun-Nung Chen. Acoustic Model Initialization. HInit + HRest. Feature Extraction - MFCC. Example of MFCC. Acoustic Model. 5. Hidden Markov Model/Gaussian Mixture Model Acoustic model unit : Initial Final set 3 states per model

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專題研究 (2) HINIT + HREST + HEREST

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  1. 專題研究 (2)HINIT + HREST + HEREST Prof. Lin-Shan Lee, TA. Yun-Nung Chen

  2. Acoustic Model Initialization HInit + HRest

  3. Feature Extraction - MFCC

  4. Example of MFCC

  5. Acoustic Model 5 • Hidden Markov Model/Gaussian Mixture Model • Acoustic model unit : Initial Final set • 3 states per model • 1 Gaussian mixture per state • We will increase Gaussian mixture next time • Example

  6. Example of HMM

  7. Flow Chart 7

  8. Phone Model Training • Train a phone model “ai” • Label data • Example • HInit – find a starting point • HRest – climb hill

  9. Acoustic Model Training HERest

  10. Acoustic Model Training • Add “ai” into “hmm.set.no_ai” • Other phones have been trained • HERest • Also hill climbing • Consider whole utterance • Do several times

  11. Appendix HInit + HRest + HERest

  12. HInit • Hinit • -A print command line • -T 1 trace flag to 1 • -C ./config/train.cfg set config file • -l ai set segment label • -o ai hmm def output • -S ./scp/train.scp set file of features • -L /share/data/TrainingLabel/ set input label dir • proto hmm file

  13. HRest • HRest • -A print command line • -T 1 trace flag to 1 • -C ./config/train.cfg set config file • -l ai set segment label • -S ./scp/train.scp set file of features • -L /share/data/TrainingLabel/ set input label dir • ai hmm file

  14. HERest • HERest • -A print command line • -T 1 trace flag to 1 • -C ./config/train.cfg set config file • -S ./scp/train.scp set file of features • -L /share/data/TrainingLabel/ set input label dir • -H hmmset.mmf load hmm file • -M hmm_herest write hmm file dir • ./list/phone.lst hmm list

  15. Homework HInit + HRest + HERest

  16. To Do • Acoustic model initialization • HInit +HRest • Train phone model “ai” • Acoustic model re-training • HERest • HTKBook Chap 8.1 – 8.5

  17. About Linux Saving your time…

  18. To Save Your Time … • Install Cygwin • Ref: 工作站使用說明 • Install HTK on your PC • Download HTK from 課程網站

  19. Tips (cygwin) • 選擇你要的套件:

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