マン・マシン・インターフェースを考慮した聴覚障害児童のための発声発語訓練装置の開発

概要

論文の詳細を見る
In this report, a basic principle of designing on effective man-machine interface is given to construct a speech training system based upon the information theory. Although the speech training system has been developed by our group, its evaluation in a field-testing indicated a need for correction in this system. In order to keep trainee's attention, a program on the display has to be attractive. Concerning these problems the newly designed inexpensive training system is constructed using the home computer MSX 2 and the speech processing interface board. The signals are picked up by a microphone, and then pass through a low pass filter which cut-off frequency is controllable by the micro computer. The analogue signals are converted to digital ones by the A/D convertor. The signal processor (μPD 7720) is adopted to find the peaks of the power spectrum which is realized by the cascaded 4 signal processors arrangement. Using the MSX 2 graphic functions, the result of this analysis is presented to trainee. This system could be utilized in the first three stage of speech training; basic vocalization;intensity, duration, pitch; pronounciation of specific vowels and dipthongs.
日本医療機器学会の論文
1988-08-01