書誌事項
- タイトル別名
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- DEVELOPMENT OF METHOD FOR MEASUREMENT OF IMPULSE RESPONSE IN ARBITRARY DIRECTION IN A ROOM BY USING SPHERICAL ARRAY MICROPHONE SYSTEM
- キュウメンジョウ ハイチ マイクロホン システム オ モチイタ シツナイ オン
- 公開日
- 1993
- DOI
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- 10.3130/aijax.445.0_9
- 公開者
- 一般社団法人 日本建築学会
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説明
In this paper, we deal with a newly developed spherical array microphone system in which approximately equal directional characteristics for octave band frequency ranges from 250 Hz to 2000 Hz can be realized in every direction and a response in arbitrary direction in the whole space can be computed out by one measurement by placing microphones on concentric spherical surfaces at random whose radii are in geometric progression. In this system : (1) Since average response method is exercised in consideration of time lag for the incidence of sound wave in arbitrary direction, the holding of directivity and improvemet of S/N ratio can be expected at the same time from the time average and space average. (2) Since sounds are kept successively at their measuring time at each sound receiving point as completely synchronized impulse response, if once measured, an impulse response in arbitrary direction in the whole space can be composed by post-treatment. (3) Since microphones are placed on spherical surfaces by regarding the whole space as equal value, more equalized space information for the whole space can be obtained.
収録刊行物
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- 日本建築学会計画系論文報告集
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日本建築学会計画系論文報告集 445 (0), 9-17, 1993
一般社団法人 日本建築学会
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詳細情報 詳細情報について
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- CRID
- 1390282679756402688
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- NII論文ID
- 110004082975
- 20000152892
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- NII書誌ID
- AN10040144
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- ISSN
- 24330043
- 09108017
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- NDL書誌ID
- 3807312
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDLサーチ
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- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可