针对气体变声语音声学特征的变异进行分析研究, 提取说话人的气体变声语音和正常语音的基频、音强、共振峰等特征参数和语谱图, 分析对比两种状态下语音特征的差异点。同时, 针对改变基频语音在听觉特征上与气体变声语音相似的特点, 进行声学特征的差异比较分析。结果表明, 气体变声语音的特征参数发生了不同程度的改变且不同个体之间差异大于自身差异。不同说话人之间气体变声后共振峰数值相近, 不具有个体差异性, 不可作为话者鉴别的依据。

The variation of the acoustic characteristics of gas voice is analyzed and researched. The fundamental frequency, intensity, formant and spectrogram of the gas voice and normal voice are extracted, and the differences between the two states are analyzed. At the same time, the differences of acoustic characteristics are compared and analyzed according to the similarity of auditory characteristics between the modified fundamental speech and the gas modified speech. The results show that the characteristic parameters of gas voice change in different degrees and the difference between different individuals is greater than their own differences. The formant values of different speakers are similar, so they do not have individual differences, and cannot be used as the basis of speaker identification.