Human Speech Analysis and Investigation by Utilizing Speech Formant Synthesizer
Date Issued
2009
Date
2009
Author(s)
Hsu, Wen-Chien
Abstract
Human perception of sounds includes loudness, pitch, and timbre. Loudness reflects the amplitude of sound pressure, pitch depicts the amount of fundamental frequency in speech. However, the description of timbre is most difficult. The characteristics of timbre are hidden inside harmonic components of a sound wave. Timber represents the feature of a speaker, which listener can tell speakers apart by this feature. Timbre is such dominant component in speech recognition, but the physical meaning of timbre does not have much investigation in the literature.n conventional techniques of speech synthesis, it can be divided into two broad fields. The first, segment recorded speech into small units, and employ the combination of these small units to synthesize speech, which limit the variety of speech. The other method is formant synthesis, establish vocal tract model beforehand, and use parameters to control the output speech. In this thesis, utilize speech formant synthesizer to compare the vocal tract model of different speakers, and propose a algorithm to analyze timbre, in order to study the consistence of human voice. Via methodologies of speech analysis, imitation, creation, it is expected to figure out the intrinsic feature of speech.
Subjects
Formant Synthesis
Speech Synthesizer
Formant,
Vocal Tract
Type
thesis
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