Title page for ETD etd-11172012-040049

Type of Document Master's Thesis
Author McMillan, David Evans
URN etd-11172012-040049
Title Time-varying linear prediction as a base for an isolated-word recognition algorithm
Degree Master of Science
Department Electrical Engineering
Advisory Committee
Advisor Name Title
Beex, A. A. Louis Committee Chair
Nunnally, Charles E. Committee Member
Vanlandingham, Hugh F. Committee Member
  • Numerical analysis
Date of Defense 1987-05-05
Availability restricted

There is a vast amount of research being done in the area of voice recognition. A large portion of this research concentrates on developing algorithms that will yield higher accuracy rates; such as algorithms based on dynamic time warping, vector quantization, and other mathematical methods [l2][21][l5].

In this research, the evaluation of the feasibility of using linear prediction (LP) with time-varying parameters as a base for a voice recognition algorithm will be investigated. First the development of an anti-aliasing filter is discussed with some results from the filter hardware realization included. Then a brief discussion of LP is presented and a method for time-varying LP is derived from this discussion. A comparison between time-varying and segmentation LP is made and a description of the developed algorithm that tests time-varying LP as a recognition technique is given. The evaluation is conducted with the developed algorithm configured for speaker-dependent and speaker-independent isolated-word recognition.

The conclusion drawn from this research is that this particular technique of voice recognition is very feasible as a base for a voice recognition algorithm. With the incorporation of other techniques, a complete algorithm can conceivably be developed that will yield very high accuracy rates. Recommendations for algorithm improvements are given along with other techniques that might be added to make a complete recognition algorithm.

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