母音および摩擦音発生時の発声器官の運動推定(2部ヒトの機能と特性)

概要

論文の詳細を見る
It is of great interest to study control laws which produce speech sounds using a large number of muscles to move articulatory organs in precise order. There are many kinds of works on this problem in the linguistic, medical and engineering fields. However, our knowledge is still so small and restricted that we need many years to accumulate data and to organize them in a satisfactory manner. The estimation of the articulatory motion from speech waves is one of the important techniques to be developed in the research of speech production. In this paper, two problems are discussed in the analyses of articulatory movements which use speech production model. First, an adaptation scheme adjusting the articulatory model for each speaker is presented, which is necessary to improve the accuracy of the estimation. The estimated results are compared with the data observed by an X-ray microbeam system, and it is shown that a simple method which uses a linear transform of the base vector to modify the model using a set of speech sounds for 5 vowels, is very effective for the improvement of the estimation accuracy. Second, an extension of the estimation for consonants is presented. For voiceless fricative consonants, a noise source exists in the middle of the vocal tract and the acoustic characteristics of these consonants are mainly determined by the vocal tract configuration between the constriction made by the tongue and the lips. We tried to determine the vocal tract shape of these consonants by the spectral matching between real speech and the synthesized one from the model. Four parameters are used to determine the area function of the vocal tract. Estimation of the area function is tested through the simulation. Studying the distribution of the spectral error for various area functions, it is confirmed that the stable convergence is always assured. And further, the application of the method to real speech waves shows hopeful consequences.
バイオメカニズム学会の論文
1982-08-30

母音および摩擦音発生時の発声器官の運動推定(2部ヒトの機能と特性)

スポンサーリンク

概要

著者

関連論文

スポンサーリンク

母音および摩擦音発生時の発声器官の運動推定(2部 ヒトの機能と特性)

スポンサーリンク

概要

著者

関連論文

スポンサーリンク

母音および摩擦音発生時の発声器官の運動推定(2部ヒトの機能と特性)