频域相对信噪比对正常、病态嗓音声学的分析

The application of frequency-domain harmonics-to-noise ratio in the acoustic analysis of the normal voice and the abnormal voice

通过对36例正常人和30例病态嗓音者的频域相对信噪比进行分析，结果表明：正常女性嗓音的频域相对信噪比呈稳定分布，而病态嗓音的相对信噪比＞1700Hz频段，与正常人比较，有显著差异（P＜0．01）。可以认为频域相对信噪比是区分病态嗓音和正常嗓音的有效参数。

The frequency-domain relative harmohics-to-noise ratios were analysed in 36 normal women and 30 patients who had suffered from abnormal voice. The result indicated: the frequency-domain relative harmonics-to-noise ratios of the normal voice were distributed stably andthe relative harmonics-to-noise ratios of the diseased voice differed obviously from that of the normal one above 1700 Hz (P<0. 01). The frequency-domain relative harmonics-to-noise ratio wasconsidered as a valuable parameter in distinguishing normal voice and diseased voice.