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| Content Provider | IET Digital Library |
|---|---|
| Author | Büyük, Osman |
| Abstract | In this paper, we make use of hidden Markov model (HMM) state alignment information in i-vector/probabilistic linear discriminant analysis (PLDA) framework to improve the verification performance in a text-dependent single utterance (TDSU) task. In the TDSU task, speakers repeat a fixed utterance in both enrollment and authentication sessions. Despite Gaussian mixture models (GMMs) have been the dominant modeling technique for text-independent applications, an HMM based method might be better suited for the TDSU task since it captures the co-articulation information better. Recently, powerful channel compensation techniques such as joint factor analysis (JFA), i-vectors and PLDA have been proposed for GMM based text-independent speaker verification. In this study, we train a separate i-vector/PLDA model for each sentence HMM state in order to utilize the alignment information of the HMM states in a TDSU task. The proposed method is tested using a multi-channel speaker verification database. In the experiments, it is observed that HMM state based i-vector/PLDA (i-vector/PLDA-HMM) provides approximately 67% relative reduction in equal error rate (EER) when compared to the i-vector/PLDA. The proposed method also outperforms the baseline GMM and sentence HMM methods. It yields approximately 51% relative reduction in EER over the best performing sentence HMM method. |
| Starting Page | 918 |
| Ending Page | 923 |
| Page Count | 6 |
| ISSN | 17519675 |
| Volume Number | 10 |
| e-ISSN | 17519683 |
| Issue Number | Issue 8, Oct (2016) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-spr/10/8 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-spr.2015.0288 |
| Journal | IET Signal Processing |
| Publisher Date | 2016-05-31 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Authentication Session Authorisation Channel Compensation Co-articulation Information Data Security EER Enrolment Session Equal Error Rate Error Analysis Error Analysis in Numerical Method Gaussian Mixture Model Gaussian Processes GMM Hidden Markov Model I-vector Modelling Markov Processes Mixture Model Multichannel Speaker Verification Database PLDA Probabilistic Linear Discriminant Analysis Sentence-HMM State Speaker Recognition Speech Processing Technique Speech Recognition Speech Recognition And Synthesis State Alignment Information Statistics TDSU Task Text Dependent Single Utterance Task Vector Verification Performance |
| Content Type | Text |
| Resource Type | Article |
| Subject | Signal Processing Electrical and Electronic Engineering |
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