Acoustic Technology, Department of Electrical Engineering, Technical University of Denmark, Building 352, DK-2800 Kongens Lyngby, Denmark.
J Acoust Soc Am. 2011 Jan;129(1):211-8. doi: 10.1121/1.3514425.
This paper examines fundamental statistical properties of the active and reactive sound intensity in reverberant enclosures driven with pure tones. The existing theory for sound intensity in a diffuse sound field, which is based on Waterhouse's random wave model and therefore limited to the region of high modal overlap, is extended to the region of low modal overlap by taking account of the random fluctuations of the sound power emitted by the source that generates the sound field. The validity of the extended model is confirmed by experimental and numerical results.
本文研究了在纯音激励的混响室内，有源和无功声强的基本统计特性。现有的扩散声场中声强理论是基于 Waterhouse 的随机波模型，因此仅限于模态重叠度较高的区域，本文通过考虑产生声场的声源声功率的随机波动，将其扩展到模态重叠度较低的区域。扩展模型的有效性通过实验和数值结果得到了验证。
