| Presentation | 2003/10/24 Extraction of multiple sound sources using a two-dimensional microphone array system A study on frequency characteristics of adaptive notch filter Tsuyoshi EIZA, Chie KINOSHITA, Yoshifumi CHISAKI, Tsuyoshi USAGAWA, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A microphone array system for computer users has ever been proposed. The microphone array consists of 4 sub-arrays which is attached to a face boundary of a computer display. Here, quality of the segregated signal is degraded because there are some dippoints in frequency characteristics. This paper addresses that a frequency of the dip point depends on both microphone element spacing and DOA. A new method for selecting a filter which has no critical dip points in a desired frequency range is proposed. In the simulation, performance of the system in the previous and the proposed system are evaluated. In case of concurrent speech signals whose power level difference is 5 dB, the value of coherence for the segregated target speech is improved from 0.91 by the system in the previous study to 0.99 by the proposed system. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Microphone array embedded on display / Adaptive notch filter / Concurrent speech segregation of multiple sound source signal / Frequency characteristic of the filter |
| Paper # | EA2003-88 |
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| Conference Information | |
| Committee | EA |
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| Conference Date | 2003/10/24(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) | Extraction of multiple sound sources using a two-dimensional microphone array system A study on frequency characteristics of adaptive notch filter |
| Sub Title (in English) | |
| Keyword(1) | Microphone array embedded on display |
| Keyword(2) | Adaptive notch filter |
| Keyword(3) | Concurrent speech segregation of multiple sound source signal |
| Keyword(4) | Frequency characteristic of the filter |
| 1st Author's Name | Tsuyoshi EIZA |
| 1st Author's Affiliation | Graduate School of Science and Technology, Kumamoto University() |
| 2nd Author's Name | Chie KINOSHITA |
| 2nd Author's Affiliation | Faculty of Engineering, Kumamoto University |
| 3rd Author's Name | Yoshifumi CHISAKI |
| 3rd Author's Affiliation | Faculty of Engineering, Kumamoto University |
| 4th Author's Name | Tsuyoshi USAGAWA |
| 4th Author's Affiliation | Faculty of Engineering, Kumamoto University |
| Date | 2003/10/24 |
| Paper # | EA2003-88 |
| Volume (vol) | vol.103 |
| Number (no) | 398 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |