Fant G
Phonetica. 1980;37(1-2):55-86. doi: 10.1159/000259983.
To derive speech wave data from area function specifications and the reverse, to predict the area function from the speech wave, are fundamental problems of acoustic theory of speech production. Deviations from ideal resonator theory in terms of vocal tract boundary conditions and source filter interactions are discussed. Perturbation theory is related to special problems of male-female vocal scaling. Shortcomings of the inverse transforms are discussed. Merits of lossy transmission line theory over standard linear prediction procedures are emphasized. The use of bandwidths for removing ambiguities is illustrated in simple models. A limited amount of bandwidth data supplementing formant frequency data and model related vocal tract constraints appears to be optimal.
从面积函数规格推导语音波数据，以及反过来从语音波预测面积函数，是语音产生声学理论的基本问题。讨论了在声道边界条件和源滤波器相互作用方面与理想共振器理论的偏差。微扰理论与男女嗓音缩放的特殊问题相关。讨论了逆变换的缺点。强调了有损传输线理论相对于标准线性预测程序的优点。在简单模型中说明了使用带宽消除模糊性的情况。补充共振峰频率数据和与模型相关的声道约束的有限带宽数据似乎是最佳的。
