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Título: Study of the correlation of LSP and LPC frequencies for vowel phonemes
Autores: Hussain, Rubina
Fecha: 1994
Publicador: McGill University - MCGILL
Fuente:
Tipo: Electronic Thesis or Dissertation
Tema: Engineering, Electronics and Electrical.
Descripción: The objective of this thesis is to provide an analysis of Linear Predictive Coding (LPC) frequencies and Line Spectrum Pair (LSP) frequencies. While it is generally known that LSP frequencies congregate about LPC formants, this study will deal with how LSP and LPC frequencies correlate. The work done in this study is intended to enhance the recognition of vowel phonemes by providing observations on the similarities between LPC and LSP frequency distribution. New information regarding exact LSP and formant relationships for different vowel phonemes is provided. Specifically, this study divides vowel and diphthong phonemes into categories, or types. These types pertain to specific patterns in the way LSP frequencies relate to the closest corresponding formant, F1, F2, or F3. In drawing relationships between formants and their corresponding LSPs, another indicator is made possible such that, when incorporated within other statistical or knowledge based techniques, it may serve to enhance the effectiveness of recognition systems.
The results of this thesis indicate that it is possible to divide the sixteen vowel phonemes into nine types. The experiment produced a 75% success rate when the test set was applied.
The first part of this thesis provides the theoretical background for the basic understanding of line spectrum pairs and the acoustic-phonetics related to the formation of vowel sounds. The second part of this thesis provides details on how the experiment was conducted and the results of the analysis. Explanations are also provided for these results.
Idioma: en