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作 者:张宇山 ZHANG Yushan(The Third Research Institute of China Electronics Technology Group Corporation,Beijing 100015,China)
机构地区:[1]中国电子科技集团公司第三研究所,北京100015
出 处:《电声技术》2020年第1期10-14,共5页Audio Engineering
摘 要:本文阐述了为保证厅堂的语言清晰度达标,电声和建声两个专业须采用互补设计,也就是在建声专业指标--混响时间超标一定量的情况下用电声专业指标予以补偿。依据语言清晰度﹙辅音清晰度损失率百分比﹚的理念,用高Q值N少的线阵列扬声器系统,通过计算机辅助模拟设计能预测语言清晰度在混响时间多少范围内能否达标,做到预先掌控结果,从而使厅堂语言清晰度达到预期或更佳的效果。This article explains that in order to ensure the clarity of the hall,the two majors of electroacoustic and architectural acoustics must adopt complementary design. When the reverberation time( architectural acoustic index) exceeds the standard value,the electroacoustic technology is used to adjust it to meet the requirements. According to the speech intelligibility( %ALCONS),using a line array loudspeaker system,which have a high Directivity Factor( Q) and low Power Ratio( N).Using computer simulations of acoustics to predict the reverberation time,the speech intelligibility can achieve the goal. By predicting the results,the speech intelligibility of the hall can achieve the desired results,even better results.
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