声频工程中厅堂扩声特性测量

Measurement of sound reinforcement characteristics of halls in audio engineering

对于使用扩声系统的厅堂来说,扩声特性的测量非常重要。介绍了传声增益、最大声压级、传输频率特性、声场不均匀度、总噪声级及失真度等六项指标的测量方法与要求,对语言清晰度测量的概念、原理、方法做了详细说明,论述了这些扩声参数对厅堂音质的影响。

For halls using sound reinforcement system,the measurement of sound reinforcement characteristics is very important. This paper introduces the measurement methods and requirements of six indicators such as sound transmission gain,maximum sound pressure level,transmission frequency characteristics,sound field non-uniformity,total noise level and distortion. The concept,principle and method of rasti measurement are described in detail,and the influence of these sound reinforcement parameters on auditorium acoustics is discussed.