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语言清晰度是语音质量评价的重要指标,可以用来评价扩声系统以及建筑声学的声环境。传统的语言清晰度评价标准有主观评价法和客观评价法。主观评价法是被测人主观对单字清晰度和句子可懂度进行评价,其弊端在于难以确定由主观因素引入的测量不确定度。客观评价法是通过通路中的调制转移函数(MTF)导出的语言传输指数(STI)来评定声学环境中的语音质量。STI方法是经过优化后的方法,能够较好
Speech intelligibility is an important indicator of voice quality assessment and can be used to evaluate the acoustic environment of sound reinforcement systems and building acoustics. The traditional language definition evaluation criteria are subjective and objective evaluation method. Subjective evaluation method is subjective assessment of the word people’s clarity and sentence intelligibility evaluation, the drawback is that it is difficult to determine the subjective factors introduced by the measurement uncertainty. The objective evaluation method is to assess the speech quality in the acoustic environment by the language transfer index (STI) derived from the modulation transfer function (MTF) in the path. The STI method is an optimized method that works better