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许多情况下,由演讲者到达听众的声传输是不完全的,其结果是降低语音清晰度。该传输系统的性能可以由调制转移函数来定量表示,即在到达听众的信号中,测量原始信号中存在的起伏被保存的程度。本文给出了调制转移函数(MTF)分析方法实现时的图解说明。此外,这些数据如何被转化为单项指数,由该指数值来定量声传输系统对语言清晰度的影响。
In many cases, acoustic transmission by the speaker to the listener is not complete, resulting in reduced speech intelligibility. The performance of the transmission system can be quantitatively expressed by a modulation transfer function, that is, in the signal reaching the listener, the degree of fluctuation in the original signal is measured. This article gives a graphical illustration of the implementation of a modulation transfer function (MTF) analysis method. In addition, how these data are translated into a single index, the value of the index to quantify the impact of acoustic transmission system on speech intelligibility.