Study on the effects of acoustic interaction between the vocal tract and vocal fold on individuality of speech sounds

点击翻译按钮获取中文摘要

The hypopharyngeal cavities, which consist of the laryngeal cavity and bilateral piriform fossae, might act as a source of individuality of speech sounds. In this study, three-dimensional acoustic analyses of the hypopharyngeal cavities were first performed to clarify the mechanism by which they generate two deep dips on transfer functions of the vocal tract. Then a model of vocal fold vibration that considers acoustic interaction between the vocal tract and vocal fold was developed to examine how the hypopharyngeal cavities affect the glottal source. As a result, compared with their effects on the glottal source, the hypopharyngeal cavities provide transfer functions of the vocal tract with much more factors relating to individuality of speech sounds.