| Presentation | 2011-06-23 Study on super directive microphone array using multiple reflected sounds Kenta NIWA, Sumitaka SAKAUCHI, Ken'ichi FURUYA, Manabu OKAMOTO, Yoichi HANEDA, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The purpose of this research is to develop a super directive microphone array that can pick up distant sounds, like a camera lens can zoom in on targers. If it is enable to pick up distant sounds clearly without locating microphones near target sources, it is useful to produce sounds corresponding to the highly realistic video. In conventional beamforming methods, it is difficult to segregate adjacent sound sources without varying increasing the array size and number of microphones. We propose MICAREF (MICrophone Array using REFlector), which generate beamforming filters using a reflector whose acoustical properties are known. When we locate reflector near microphone array, reflected sounds are included in transfer functions. By using the transfer functions, we found that the nulls are generated in noise directions, which is located near target source. From simulating results, we confirmed that the super directivity is formed by using MICAREF. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Microphone array / Reflected sound / Spatial correlation matrix / Beamforming |
| Paper # | EA2011-34 |
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| Conference Information | |
| Committee | EA |
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| Conference Date | 2011/6/16(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) | Study on super directive microphone array using multiple reflected sounds |
| Sub Title (in English) | |
| Keyword(1) | Microphone array |
| Keyword(2) | Reflected sound |
| Keyword(3) | Spatial correlation matrix |
| Keyword(4) | Beamforming |
| 1st Author's Name | Kenta NIWA |
| 1st Author's Affiliation | Nippon Telegraph and Telephone Corporation/NTT Cyber Space Laboratories() |
| 2nd Author's Name | Sumitaka SAKAUCHI |
| 2nd Author's Affiliation | Nippon Telegraph and Telephone Corporation/NTT Cyber Space Laboratories |
| 3rd Author's Name | Ken'ichi FURUYA |
| 3rd Author's Affiliation | Nippon Telegraph and Telephone Corporation/NTT Cyber Space Laboratories |
| 4th Author's Name | Manabu OKAMOTO |
| 4th Author's Affiliation | Nippon Telegraph and Telephone Corporation/NTT Cyber Space Laboratories |
| 5th Author's Name | Yoichi HANEDA |
| 5th Author's Affiliation | Nippon Telegraph and Telephone Corporation/NTT Cyber Space Laboratories |
| Date | 2011-06-23 |
| Paper # | EA2011-34 |
| Volume (vol) | vol.111 |
| Number (no) | 89 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |