Study of Vowel Classification
Robert A. Houde · The Journal of the Acoustical Society of America · 1960
It is generally accepted that the voiced portions of speech may be idealized into time variations of the first three formant frequencies and the fundamental frequency. The influence of these parameters upon the classification of short steady-state vowel segments was determined. The mechanism by which a listener quantizes the voiced portions of speech into units subjectively equal to the steady-state vowel segments is presented. The application of this method of vowel classification to an automatic speech recognition process is discussed.