利用粉红噪声信号产生稳态干扰噪声，使该噪声与消声室录制的汉语语言清晰度测试字表信号的频谱相同，然后将噪声和汉语语言清晰度测试字表信号分别与等化后的双耳室内脉冲响应卷积，再按照一定的信噪比混合，通过耳机重放，由听音人进行汉语语言清晰度主观评价，在不同的混响、信噪比条件下探讨发音速率对汉语语言清晰度的影响，并对不同发音速率的喜好度进行评价。结果表明：室内混响时间、信噪比和发音速率对汉语语言清晰度有显著影响。信噪比比混响时间和发音速率对汉语语言清晰度有更加显著的影响。在本文的测试条件下个体喜好的发音速率为4.0音节/秒。

Noise that has same frequency spectrum with the Chinese speech intelligibility test signals recorded in anechoic chamber is obtained from the pink noise signal. Both noise and test signals are convolved with binaural room impulse responses after headphone equalization and mixed each other according to certain signal-to-noise ratio(SNR), then reproduced over headphone. Subjective Chinese speech intelligibility test is carried out by the listeners. The effect of speaking rate on Chinese speech intelligibility in room under different SNR and reverberation time condition is discussed. The preferred rate of Chinese speaking is also investigated. The result show that reverberation time at listening positions in room, SNR and speaking rate have significant effects on the intelligibility of Chinese speech, and the effect of SNR is more significant than that of reverberation time and speaking rate. The results also show that the preferred rate of Chinese speaking for subjects is 4.0 syllables per second in this study.