Accession Number : AD0282147

Title :   AN AUTOMATIC SPEECH FORMANT TRACKING FILTER,

Corporate Author : MICHIGAN UNIV ANN ARBOR

Personal Author(s) : Hellwarth,George A.

Report Date : MAY 1962

Pagination or Media Count : 123

Abstract : As a solution to formant frequency measurement in real time, a continuously tuned, automatic tracking filter system is proposed which locates these spectral maxima of speech signals through an application of automatic frequency control techniques. The experimental circuitry is described, stability and performance characteristics are given for this feedback control system and several figures are shown to demonstrate the ability of the system to track speech formants. The problem of constructing a complete speech analysis system utilizing tracking filters is discussed. (Author)

Descriptors :   (*SPEECH TRANSMISSION), (*ACOUSTIC FILTERS), (*FEEDBACK), (*CODING)

Distribution Statement : APPROVED FOR PUBLIC RELEASE