電気的構音器官模型electrical vocal tract analogについて

概要

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On the purpose of studying the relationship between the articulatory configulation and speech sound radiated, an electrical analog of human vocal tract and its contrOl system were designed and constructed. The anal0g circuit of vocal tract is similar to that designed previously by K. N. Stevens, which is a lumped-constant network consisted of thirty-five pi-four terminal sections. Each section represent 0.5cm length of the vocal tract and is adjustable to simulate the range of cross sectional areas from 0.174 to 17.6cm2.The idealized vocal tract configulations for vowel production might be represented as afunction of three parameters, i. e. the effective radius or the cross sectional dimentions of thetube at the point of greatest constriction in the vocal tract, the distance of that point from the glottis, and the ratio of the area of the mouth opening to the length of the mouth opening. In the present studies the effects upon the acoustical characteristic of the sounds were discussed in some of simplest ways. Synthesis of consonants were also done though satisfactory sounds were note yet obtained.