| Presentation | 2004/1/22 A study on distinguishment between double talk and echo path change Ruoyu ZHANG, Kensaku FUJII, Mitsuji MUNEYASU, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In acoustic echo canceller, the echo return loss enhancement deteriorates when the power ratio of the reference signal to the noise is low and after the echo path changed. This paper presents techniques to update the coefficients of the adaptive filter without the detection of the low ratio and the change. We use the block implementation of the normalized least mean square (NLMS) algorithm as adaptive algorithm. In this implementation, not only the step size but also the block length are available for controlling the estimation error. The estimation error can be kept at a desired level even under the fluctuation of the power ratio by adjusting the both. A problem is that the adjustment decreases the convergence speed after large echo path change. This paper presents a method that can distinguish large echo path change and the double-talk quickly, and ... |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | acoustic echo canceller / double-talk / block length adjustment step size control |
| Paper # | EA2003-146 |
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| Conference Information | |
| Committee | EA |
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| Conference Date | 2004/1/22(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) | A study on distinguishment between double talk and echo path change |
| Sub Title (in English) | |
| Keyword(1) | acoustic echo canceller |
| Keyword(2) | double-talk |
| Keyword(3) | block length adjustment step size control |
| 1st Author's Name | Ruoyu ZHANG |
| 1st Author's Affiliation | Faculty of Engineering, Himeji Institute of Technology() |
| 2nd Author's Name | Kensaku FUJII |
| 2nd Author's Affiliation | Faculty of Engineering, Himeji Institute of Technology |
| 3rd Author's Name | Mitsuji MUNEYASU |
| 3rd Author's Affiliation | Faculty of Engineering, Kansai University |
| Date | 2004/1/22 |
| Paper # | EA2003-146 |
| Volume (vol) | vol.103 |
| Number (no) | 609 |
| Page | pp.pp.- |
| #Pages | 8 |
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