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An analysis‐by‐synthesis approach to the estimation of vocal cord polyp features
Author(s) -
Koizumi Takuya,
Taniguchi Shuji,
Itakura Fumitada
Publication year - 1993
Publication title -
the laryngoscope
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.181
H-Index - 148
eISSN - 1531-4995
pISSN - 0023-852X
DOI - 10.1288/00005537-199309000-00015
Subject(s) - medicine , cord , vocal folds , pathological , anatomy , audiology , pathology , larynx , surgery
This paper deals with a new noninvasive method of estimating vocal cord polyp features 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 golf‐ball–like polyp from normal voices, 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. A synthetic 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 estimating the features of golf‐ball–like vocal cord polyps.