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互谱法声强测量技术是近十年来发展的新测量技术。由于声强是矢量,它反映了声能源的传递,所以,与传统的声压测量相比,声强测量具有一些独特的优点,如,可以进行近场测量;不需要特定的声学环境,而能够在现场测量机器的声功率;可以进行声源识别等等。所以,声强技术一出现,就因其具有巨大的实用价值而引起声学界的广泛重视。国际标准化组织(ISO)已于1986年12月提出了“声学:噪声源声功率级的测定方法—声强法第一提案稿”。一些国家先后研制成可供实用的声强测量仪或测量分析系统。我国从八十年代初开始声强测量的研究,目前,仍处于实验室研究阶段。
Cross spectrum sound intensity measurement technology is the development of new measurement technology over the past decade. Because sound intensity is a vector, which reflects the transmission of acoustic energy, sound intensity measurements have some unique advantages over traditional sound pressure measurements such as near-field measurements; no specific acoustic environment is required, and Can measure the sound power of the machine in the scene; Can carry on the sound source recognition and so on. Therefore, the emergence of sound-intensity technology, due to its huge practical value caused widespread attention by the acoustic community. In December 1986, the International Organization for Standardization (ISO) put forward the “Acoustics: Method for Measuring the Sound Power Level of Noise Source - First Proposal of Sound Intensity Method”. Some countries have developed into a practical sound intensity meter or measurement analysis system. Our country from the early eighties early sound intensity measurement research, at present, still in the laboratory research stage.