摘要
对北京10所高校的12个公共食堂就餐高峰期的声环境进行了现场调查,比较高校公共食堂之间背景噪声声级及混响时间等声学参数,并在实验室可控条件下模拟高校食堂的声环境,对不同信噪比时汉语普通话单音节清晰度和语言传输指数STIPA进行测量分析。调查结果表明高校公共食堂的声环境普遍较差,混响时间较长,清晰度较低。针对校内公共食堂的现状,提出对高校食堂的声环境质量的改进建议。
The acoustic environment during repast peak at twelve public canteens of ten universities in Beijing is investigated, and the acoustic parameters including background noise level and reverberation time are compared between public canteens. A la- boratory test under controlled conditions is carried out to simulate acoustic environment and to measure the clarity of Mandarin monosyllable and STIPA caused by different signal - to - noise ratio. The survey results show that the acoustic environment of the public canteens is generally poor, in which clarity declines as reverberation time growing. According to the present situation of the public canteens, the suggestions for improvement of acoustic environmental quality are putted forward.
出处
《电声技术》
2013年第2期11-13,16,共4页
Audio Engineering
基金
国家自然科学基金项目(11204278
11174275)
高等学校博士点基金项目(20100018110001)
关键词
公共食堂
背景噪声
混响时间
语言清晰度
语言传输指数
public canteen
background noise： reverberation time
speech clarity
speech transmission index
