扩声系统语言清晰度的工程估算和修正

Engineering Estimation and Modification of Speech Articulation in Sound Reinforcement System

语言清晰度估算是建筑声学和扩声系统重要联系之一。直达声与混响声能比影响辅音清晰度损失率,从而影响语言清晰度。结合具体工程实例,给出了语言清晰度相关参数估计值、实际测量值和两者的偏差分析,并指出对语言清晰度的有效估算应该修正。正确的清晰度估算可以节约投资,降低工程风险。

The estimation of speech articulation is one of important connections of architectural acoustics and sound reinforcement system. The speech articulation is affected by the articulation loss of consonants which is impacted by the acoustic ratio of direct and reverberation sound. Combined with the concrete projects, the estimated and measured values of related coefficients of speech articulation are given,and the differences between them are analyzed. It is pointed that the estimation of speech articulation should be modified. By estimating the speech articulation exactly, the investment can be economized, and the risks can be reduced.