建声条件是决定语言可懂度优劣的主要因素

Acoustical condition is the main factor to determine the quality of speech intelligibility

语言可懂度对专业扩声工程来说是一个重要的特性指标,特别是对公共广播系统工程,语言可懂度特性指标更是系统等级界定的重要依据。决定语言可懂度的因素有很多,那什么是影响语言可懂度的主要因素呢?是建声条件、环境噪声还是系统频响或失真?对同一个扩声系统在多个场所、不同的条件下的语言可懂度进行测量,通过实验的方法来研究和探讨什么是影响扩声系统工程语言可懂度的主要因素,并得出结论。

Speech intelligibility is an important charaeterislic index for the sound reinforeement engineering. For public address syslem engineering, speech intelligibiliTy is especially an essential determination to the system class definition. There are a lot of taetors which afFeet speech intelligibility, such as architectural acousties conditions, environmental noise, and sys- tem frequency response and distortion. Then what is the key factor？ By adopting experimental method, the authnr measure speech intelligibilities of a sound reinforcement system at several locations and under different conditions, research and study the key factor which affects the speech intelligibility of system engineering, and draw a conclusion in the end.