摘要
文中介绍为保证在隧道发生交通事故、火灾等情况下发布疏散警告等信息,计划在隧道中安装扬声器系统,目的是要定量预测在隧道高背景噪声和长混响时间的不利条件下,该系统可否满足基本的语言清晰度要求。
In order to inform the warning of evacuation when traffic accident and/or fire occur in tunnel, loudspeaker system is planned to be installed in it. The purpose is to predict whether the system can meet the requirements of basic speech articulation under the disadvantageous conditions of high background noise and long reverberation time.
出处
《电声技术》
2005年第1期15-17,共3页
Audio Engineering
关键词
隧道
语言清晰度
语言传输指数
容许噪声级
tunnel
speech articulation
Speech Transmission Index(STI)
acceptable noise level
