First International Conference on Spoken Language Processing (ICSLP 90)

Kobe, Japan
November 18-22, 1990

A Novel Model of Pathological Vocal Cords and its Application to the Diagnosis of Vocal Cord Polyp

Takuya Koizumi, Shuji Taniguchi

Faculty of Engineering, Fukui University, Fukui, Japan

The present paper deals with a new noninvasive method of diagnosing vocal cord polyp through hoarse voice analysis. A noteworthy feature of this method is that it enables us not only to discriminate hoarse voices caused by pathological vocal cords with a single polyp from hoarse voices due to other laryngeal diseases but also to estimate polyp features such as the mass and dimension of polyp through the use of a novel model of pathological vocal cords which has been devised to simulate the subtle movement of the vocal cords with a single polyp. A syn- thetic hoarse voice produced with a hoarse voice synthesizer is compared with a natural hoarse voice caused by the vocal cord polyp in terms of a distance measure and the polyp features are estimated by minimizing the distance measure. Some estimates of polyp dimension that have been obtained by applying this procedure to hoarse voices are found to compare favorably with actual polyp dimensions, demonstrating that the procedure is effective for the diagnosis of vocal cord polyp.

Full Paper

Bibliographic reference.  Koizumi, Takuya / Taniguchi, Shuji (1990): "A novel model of pathological vocal cords and its application to the diagnosis of vocal cord polyp", In ICSLP-1990, 73-76.