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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 spectral features of each vowel of // а /, / i: /, / u: / quadruple vowels and to choose the best vowel for vocal acoustics analysis. Methods A total of 100 normal adult subjects underwent spectral analysis of the voice and detected // a: /, / i: /, / u: / quaternary vowels respectively. The characteristics of the acoustic parameters were analyzed statistically in parallel. Results There were significant differences in amplitudes, fundamental frequency perturbations, amplitude perturbations, noise energies, harmonic to noise ratios, and the frequencies, bandwidths and intensities of the quaternary vowels. Among them, Amplitude perturbation smallest and the largest harmonic ratio, / u: / the largest of the two before the sound, the normalized noise energy significantly higher than the other triads. Conclusion /, / a: / bivariate is more appropriate detection of sound samples, / i: / sound susceptible to its ability to compensate for the detection accuracy, / u: / sound noise, affecting other acoustic parameters are not Suitable as a test sound samples.