嗓音检测中元音声样的选择

Study on Vowel Selection in Voice Acoustic Measurements

目的 探讨／／а／、／ｉ：／、／ｕ：／四元音声样的各嗓音频谱参数特点，选择最佳声样用于嗓音声学分析。方法１００例正常成年受试者行嗓音频谱分析，分别检测／／ａ：／、／ｉ：／、／ｕ：／四元音声样，分析各项声学参数特点并行统计学比较。结果 四元音声样的振幅、基频微扰、振幅微扰、噪声能量、谐噪比及各共振峰频率、带宽、强度等均存在统计学差异，其中／ｉ：／音基频微扰、振幅微扰最小而谐噪比最大，／ｕ：／音前二者最大，规度化噪声能量显著高于其他三元音。结论／、／ａ：／二元音是较为合适的检测声样，／ｉ：／音易受代偿能力影响其检测准确性，／ｕ：／音噪声较大，影响其他声学参数，均不适合作为检测声样。

Objective To investigate the acoustic parameters of vowels//a:/、/i:/、/u:/ and select the most sensitive vowels for acoustic measurements. Methods Voice acoustic parameters of 100 normal adult with different vowels a:/、/i:/、/u:/、 were analysed. Measured acoustic parameters include: F0, Amplitude, jitter, shimmer, NNE, HNR, F1, B1, A1, F2,B2,A2,F3,B3,A3. Results Amplitude, jitter, shimmer, NNE, HNR and formant parameters of the four vowels were significantly different, vowel /i : / had the highest HNR while vowel /u : / had the highest NNE. Conclusion //、 ~/a: / are more suitable in voice acoustic measurement and is the most suitable, /i:/\/u:/ are easier to be influenced by other factors.