The train public address system is the most important system for information interaction between trains and passengers,and is an important part of train operation,occupying an important position in train vehicles.With the rapid development of train design level and the improvement of people's living standard,people's demand for public address system is not only limited to the realization of functions,but also requires better and better performance of sound quality.Starting from the perspective of testing methods for train public address systems,this article refers to the testing standards and requirements of related systems in non-rail transportation industries,and lists two main parameters related to sound quality,i.e.,sound field nonunifornity and speech intelligibility.Combined with the completed train public address system tests,the attributes and requirements of railway vehicles are taken into account to discuss and summarize the requirements that should be met by the two main parameters of the train public address system,namely,sound field nonunifornity and speech intelligibility.Finally,the test methods for testing sound field nonunifornity and speech intelligibility in the train environment are summarized,which provides a certain research basis for the subsequent formation of unified test methods and standards.
关键词
广播系统/声品质/声场不均匀度/语言清晰度/测试方法
Key words
public address system/sound quality/sound field nonunifornity/speech intelligibility/test method
维普
万方数据