一、引言随着人民生活的不断提高,对收音机、录音机、电视机等电声产品的要求量越来越大,质量要求越来越高,而扬声器是这些产品的重要零件,因此扬声器的质量和产量就成了这类产品的关键。我国有六个大的电声器材厂,每个厂家年产都 I. INTRODUCTION With the continuous improvement of people’s life, the demand for electro-acoustic products such as radios, tape recorders, televisions and so on is increasing. The quality requirements are getting higher and higher, and the loudspeakers are the important parts of these products. Therefore, the quality of the loudspeakers And yield has become the key to such products. China has six large electroacoustic equipment factory, each with an annual output of all