Research on Pronunciation Mechanisms of Human Voice
Date Issued
2009
Date
2009
Author(s)
Huang, Xuan
Abstract
The way to cognize the speech is still the riddle unsolved. Hence speech is the most direct method to transmit information and applied frequently in daily life, many researchers try to find out ways to deal with the voice, and to comprehend the meanings behind speech. As a result, speech recognition becomes a popular topic in signal processing. Among all the methods of speech recognition, formants detection is the one based on physical structure. This thesis would make deeper analysis and discussion in how to cognize the speech with formants as feature. The topic of this thesis is to find out the acoustic features with physical meaning. Speech recognition could be discussed in two different aspects, the content of the speech and the speaker identify. When different speakers pronounce the same words, there must be a certain compatibility to integrate the content and the differences to distinguish the speakers. Because the variation of the pronunciation organs is limited, it could be regarded as that there exists natural diverseness between speakers, and then changing the vocal tract to speak by learning. Among the vocal tract models, the significant and wildly used acoustics feature is the so-called formant, which is the peak of the frequency spectrum. According to that, this thesis would focus on the relationships between formants and vowels.
Subjects
Speech Recognition
Acoustics Feature
Pronouncing Model
Vocal Tract Filter
Formant
Type
thesis
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