講演抄録/キーワード |
講演名 |
2014-03-28 16:50
Robustness of spherical and cylindrical microphone arrays in harmonic beamforming applications ○Jorge Trevino(Tohoku Univ.)・Shoichi Koyama(NTT)・Shuichi Sakamoto・Yo-iti Suzuki(Tohoku Univ.) EA2013-126 |
抄録 |
(和) |
Microphone arrays are commonly used to record spatial sound information. Several techniques, collectively known as harmonic beamforming, can be used to pick up sounds arriving from specific directions. This serves as a starting point for spatial analysis and encoding methods, such as high-order Ambisonics. This research compares the effects that microphone positioning and calibration errors have in the performance of harmonic beamformers using spherical and cylindrical microphone arrays. The results show a comparable performance for both geometries, with cylindrical arrays being slightly more robust to imprecise microphone positioning and calibration. |
(英) |
Microphone arrays are commonly used to record spatial sound information. Several techniques, collectively known as harmonic beamforming, can be used to pick up sounds arriving from specific directions. This serves as a starting point for spatial analysis and encoding methods, such as high-order Ambisonics. This research compares the effects that microphone positioning and calibration errors have in the performance of harmonic beamformers using spherical and cylindrical microphone arrays. The results show a comparable performance for both geometries, with cylindrical arrays being slightly more robust to imprecise microphone positioning and calibration. |
キーワード |
(和) |
/ / / / / / / |
(英) |
3D cylindrical Ambisonics / higher-order Ambisonics / harmonic expansion / microphone array / / / / |
文献情報 |
信学技報, vol. 113, no. 503, EA2013-126, pp. 37-42, 2014年3月. |
資料番号 |
EA2013-126 |
発行日 |
2014-03-21 (EA) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
EA2013-126 |