源-滤波器模型precursor to the acoustic theory of speech production. Journal of Phonetic Society of Japan. 2001, 5 (2): 6–7. Stevens, K. N. Acoustic Phonetics. Cambridge
元音鬆緊對立引文使用过时参数coauthors (帮助) Large, John. Towards an Integrated Physiologic-Acoustic Theory of Vocal Registers. The NATS Bulletin. February–March 1972, 28: 30–35