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Please use this identifier to cite or link to this item: http://hdl.handle.net/10204/5600

Title: Trajectory behaviour at different phonemic context sizes
Authors: Badenhorst, J
Davel, MH
Barnard, E
Keywords: Phonemic context sizes
Temporal trajectories
Mel Frequency Cepstral Coefficients
Phone transitions
Issue Date: Nov-2011
Publisher: PRASA
Citation: Badenhorst, J, Davel, MH and Barnard, E. Trajectory behaviour at different phonemic context sizes. The 22 International Symposium of the Pattern Recognition Association of South Africa, Prasa 2011, Vanderbijlpark, South Africa, 22-25 November 2011
Series/Report no.: Workflow;8132
Abstract: The authors propose a piecewise-linear model for the temporal trajectories of Mel Frequency Cepstral Coefficients during phone transitions. As with conventional Hidden Markov Models, the parameters of the model can be estimated for different phonemic context sizes, but their model allows for an intuitive understanding of the impact of context size. They find that the most detailed models, predictably, match the coefficient tracks best - but when data scarcity forces them to use less detailed models, different types of context modelling (clustered triphones versus biphones) have complimentary behaviours. The authors discuss how this complimentarity may be useful for data-efficient ASR.
Description: The 22 International Symposium of the Pattern Recognition Association of South Africa, Prasa 2011, Vanderbijlpark, South Africa, 22-25 November 2011
URI: http://hdl.handle.net/10204/5600
Appears in Collections:Human language technologies
General science, engineering & technology

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