| Presentation | 2005/12/14 A threshold optimization method based on Adaboost for multi-stream speaker verification Taichi ASAMI, Koji IWANO, Sadaoki FURUI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes an automatic stream-weight and threshold optimization method for speaker verification using multi-stream HMMs. In our speaker verification framework using multi-stream HMMs integrating spectral and F_0 features, the proposed method simultaneously optimizes stream-weights and a decision threshold by combining the linear discriminant analysis (LDA) and the Adaboost techniques. Experiments were conducted using Japanese four-connected-digit utterances contaminated by white noise with various SNRs. In the experiments, a target ratio of false acceptance rate (FAR) and false rejection rate (FRR) was set at 1:1 so as to adjust them to approach an equal error rate (EER). Experimental results show that the proposed method effectively estimates the stream-weights and the thresholds in 5-20dB SNR conditions. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | speaker verification / noise robustness / multi-stream HMM / threshold estimation / stream-weight estimation / Adaboost |
| Paper # | NLC2005-57,SP2005-90 |
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| Conference Information | |
| Committee | NLC |
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| Conference Date | 2005/12/14(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Paper Information | |
| Registration To | Natural Language Understanding and Models of Communication (NLC) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A threshold optimization method based on Adaboost for multi-stream speaker verification |
| Sub Title (in English) | |
| Keyword(1) | speaker verification |
| Keyword(2) | noise robustness |
| Keyword(3) | multi-stream HMM |
| Keyword(4) | threshold estimation |
| Keyword(5) | stream-weight estimation |
| Keyword(6) | Adaboost |
| 1st Author's Name | Taichi ASAMI |
| 1st Author's Affiliation | Department of Computer Science, Tokyo Institute of Technology() |
| 2nd Author's Name | Koji IWANO |
| 2nd Author's Affiliation | Department of Computer Science, Tokyo Institute of Technology |
| 3rd Author's Name | Sadaoki FURUI |
| 3rd Author's Affiliation | Department of Computer Science, Tokyo Institute of Technology |
| Date | 2005/12/14 |
| Paper # | NLC2005-57,SP2005-90 |
| Volume (vol) | vol.105 |
| Number (no) | 493 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |