一种定向选择性噪声测量法的研究与实践

Research and Practice of the Selective Direction Noise Measurement Method

研究了一种能用于识别强背景噪声污染下噪声源的定向选择性噪声测量法的理论及其实验技术。作为实例,采用该方法对一个位于强背景噪声污染下的恒定声源进行了测量,并将其结果与该声源在消声室所测量的结果进行比较,表明定向选择性噪声测量法在很大程度上能消除背景噪声对被测声源噪声数据的干扰,从而为强背景噪声下获取被测声源的噪声数据开辟了新的途径。

In this paper,a theoretical and experimental investigation is presented for the selective direction noise measurement method which could be used to identify a noise source from background noise.As an ex- ample,this method was used to measure a constant noise source in a field polluted by strong background noise.The result was compared with that done in a anchoic room.It was found that the selective direction noise measurement method could in an great sense reject background noise affecting noise data of a mea- sured source.This could be used as a new method to get acoustic data of a measured source in a great back- ground noise.