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An Application of Cross-Spectral Analysis to the Measurement of Contribution of Noise Sources
https://jaxa.repo.nii.ac.jp/records/34471
https://jaxa.repo.nii.ac.jp/records/34471dcb2e164-b39d-4e08-96e3-4fdfa65b351f
名前 / ファイル | ライセンス | アクション |
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SA2400904.pdf (612.3 kB)
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2015-03-26 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | An Application of Cross-Spectral Analysis to the Measurement of Contribution of Noise Sources | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
著者 |
ISHII, Yasushi
× ISHII, Yasushi× ISHIDA, Masahiro |
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出版者 | ||||||
出版者 | 東京大学宇宙航空研究所 | |||||
出版者(英) | ||||||
出版者 | Institute of Space and Aeronautical Science,University of Tokyo | |||||
書誌情報 |
en : ISAS report/Institute of Space and Aeronautical Science,University of Tokyo 巻 38, 号 4, p. 41-48, 発行日 1973-05 |
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抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | The measurement of the contributions of noise sources is to determine the amount of acoustic power contributed to the field at a given point by each of several sources. The signal from the microphone placed at an observation point is cross-correlated with the signal from the second microphone placed sufficiently close to a noise source. The measured cross-correlation function is converted into the cross-spectral density through digital computations and then divided by the power-spectrum of the signal from the second microphone, giving the frequency transfer function between the noise source and the observation point. Using the computed transfer function, we can separate the component due to the source in question from the total sound power-spectrum at the observation point. Some preliminary experiments including the separation of exhaust noise of an automobile were made, and the results verified the effectiveness of this cross-spectral method. | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 0372-1418 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00675986 | |||||
資料番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 資料番号: SA2400904000 |