选择性声强技术的研究及其在噪声控制中的应用

传统的声强技术容易受到强大背景噪声的干扰，针对此问题本文提出一种新的噪声测试技术--选择性声强技术，并利用自行研制的噪声自动分析系统对其进行了研究，包括原理、算法及测试设备。研究结果表明：选择性声强技术可以将目标噪声源的辐射噪声从强大的背景噪声中分离出来，测量结果有效地反映了目标噪声源的声场分布状况，为目标噪声源的噪声辐射特性研究及噪声控制提供参考依据。

Research of Selective Acoustic Intensity

Traditional acoustic intensity technology is subjected to background noise. Aiming at this problem this paper presents a new noise measurement technology-selective acoustic intensity. Using a new type of automatic noise analysis system which is self-developed selective acoustic intensity is researched. The research content of selective acoustic intensity includes principle,algorithm and equipments. The research result shows that selective acoustic intensity technology eliminates the interference of background noise. So the measurement of selective acoustic intensity reflects sound field distribution of noise source. Selective acoustic intensity technology presents useful reference for noise control.