Weinberg B, Horii Y
Cleft Palate J. 1975 Jan;12(00):12-6.
Acoustic features of pharyngeal /s/ substitutions spoken by persons with cleft palate were measured using digital computer processing and analysis techniques. Average short-time spectral characteristics of pharyngeal /s/ sounds produced by four speakers with cleft palate were compared with spectral features of normally gestured /s/ sounds spoken by two normal speakers. The output spectral characterized by a set of distinctive acoustic properties that differed markedly from normal /s/ sounds gestured in the front of the mouth. One consistent feature of pharyngeal /s/'s was the presence of multiple spectral maxima. Pharyngealization of /s/ consonants gave rise to spectral outputs with energy maxima appropriate to high F1 values which were relatively close to F2, as well as to relatively strong, low frequency excitation of F2 speakers with cleft palate were, in general, comparable to those of /h/ fricatives spoken by speakers of Arabic.
运用数字计算机处理与分析技术，测量腭裂患者所发咽音/s/替代音的声学特征。将四位腭裂患者发出的咽音/s/的平均短时频谱特征，与两位正常发音者正常发出的/s/音的频谱特征进行比较。输出频谱具有一组独特的声学特性，与口腔前部正常发出的/s/音明显不同。咽音/s/的一个一致特征是存在多个频谱峰值。/s/辅音的咽化产生了频谱输出，其能量峰值适合于相对接近F2的高F1值，以及F2相对较强的低频激励。腭裂患者的情况总体上与阿拉伯语使用者发/h/擦音的情况相当。
