Sound Power Determination based on Minimum Measurement Data using a Three-Dimensional Sound Intensity Measurement System : Theoretical Discussion

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概要

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• The sound power level can be calculated from the peak sound intensity level, the distance from the observation point to the source, and the directivity index. For the sound power determination based on minimum measurement data, this report discusses whether the directivity index can be theoretically calculated from the maximum directivity ratio, the beam width, and the surface area of minor lobes using model sound sources. A 3-D sound intensity measurement system can easy measure these quantities. As the results, it can be said that the directivity indices can be obtained from five curves (In models).

• 一般社団法人電子情報通信学会の論文
• 2005-10-13

著者

• Nagata Shiho

  Department Of Electrical And Electronic Engineering Faculty Of Engineering Shinshu University

• Furihata Kenji

  Department Of Electrical And Electronic Engineering Faculty Of Engineering Shinshu University

関連論文

• A Three-Dimensional Sound Intensity Measurement System using the Rotating and Variable Directional Microphone Methods
• Sound Power Determination based on Minimum Measurement Data using a Three-Dimensional Sound Intensity Measurement System : Theoretical Discussion

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