| Presentation | 2010-03-26 Evaluation of a nonlinear-echo canceller applied to a hands-free communication system with sampling-frequency offsets Yasuhiro MOCHIDA, Osamu HOSHUYAMA, Toshiyuki NOMURA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper provides a performance evaluation of a nonlinear-echo canceller(NLEC)applied to a hands-free communication system with sampling-frequency offsets. When a conventional echo canceller using linear adaptive filter(EC-LAF)is used for the system, it cannot cancel out the echo because the optimal echo path fluctuates. However, the echo replica, which is the output signal of EC-LAF, and the residual echo have correlation, which is similar to the residual echo model in the NLEC and leads to the effectiveness of the NLEC. Simulations with speech signals including doubletalk periods demonstrate that the echo suppression performance of the NLEC is approximately 20 dB higher than that of the EC-LAF. Furthermore, mean opinion score shows that the near-end speech quality of the NLEC is 0.5 point higher than that of EC-LAF. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | hands-free communication / sampling-frequency offset / nonlinear-echo canceller |
| Paper # | EA2009-118 |
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| Conference Information | |
| Committee | EA |
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| Conference Date | 2010/3/19(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Engineering Acoustics (EA) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Evaluation of a nonlinear-echo canceller applied to a hands-free communication system with sampling-frequency offsets |
| Sub Title (in English) | |
| Keyword(1) | hands-free communication |
| Keyword(2) | sampling-frequency offset |
| Keyword(3) | nonlinear-echo canceller |
| 1st Author's Name | Yasuhiro MOCHIDA |
| 1st Author's Affiliation | Graduate School of Information Science and Technology, The University of Tokyo() |
| 2nd Author's Name | Osamu HOSHUYAMA |
| 2nd Author's Affiliation | Common Platform Software Research Laboratories, NEC Corporation |
| 3rd Author's Name | Toshiyuki NOMURA |
| 3rd Author's Affiliation | Common Platform Software Research Laboratories, NEC Corporation |
| Date | 2010-03-26 |
| Paper # | EA2009-118 |
| Volume (vol) | vol.109 |
| Number (no) | 472 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |