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通过测量传输通路的调制转移函数而导出语言传输指数可以客观评价厅堂或扩声系统的语言清晰度。本文介绍了测得的汉语普通话的调制转移函数,比较了语言传输指数和快速语言传输指数的相关性并绘出汉语普通话音节清晰度和语言传输指数的关系曲线。
By measuring the modulation transfer function of the transmission path and deriving the language transfer index, the speech intelligibility of the auditorium or sound reinforcement system can be objectively evaluated. This paper introduces the measured modulation transfer function of Chinese mandarin and compares the correlation between the language transfer index and the fast language transfer index and draws the curve of the relationship between the clarity of Chinese Mandarin syllables and the language transfer index.