Adaptive estimation of speech parameters

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dc.contributor.authorBasson, J. A. L.en_ZA
dc.contributor.authorDu Preez, J. A.en_ZA
dc.date.accessioned2011-05-15T16:05:56Z
dc.date.available2011-05-15T16:05:56Z
dc.date.issued1994
dc.descriptionCITATION: Basson, J. A. L. & Du Preez, J. A. 1994. Adaptive estimation of speech parameters. Communications and Signal Processing, 1994. COMSIG-94., Proceedings of the 1994 IEEE South African Symposium on, Stellenbosch, 1994, pp. 177-182, doi:10.1109/COMSIG.1994.512459.
dc.descriptionThe original publication is available at http://ieeexplore.ieee.org
dc.description.abstractLinear predictive coding (LPC), and transformations of it, is currently the most popular way of analysing speech signals. Major limitations of using a frame-based technique are that each frame is analysed in isolation of the rest while assuming the excitation source to be a white noise process. In order to reduce computation time, an all pole model is usually employed. In this project an adaptive algorithm is proposed for speech signal analysis. The algorithm is based on the recursive least squares method with a variable forgetting factor. A pole-zero model is used to estimate the anti-formants present in certain sounds (i.e. nasals and nasalized vowels). This method offers better detection of poles and zeros in stationary environments and faster tracking of pole and zero frequencies in nonstationary signals than other sequential methods. An effective input estimation algorithm eliminates the influence of pitch on the parameter estimates by assuming the input to be a white noise process or a pulse sequence.
dc.description.urihttp://ieeexplore.ieee.org/document/512459/
dc.description.versionPublisher's version
dc.format.extent6 pages
dc.identifier.citationBasson, J. A. L. & Du Preez, J. A. 1994. Adaptive estimation of speech parameters. Communications and Signal Processing, 1994. COMSIG-94., Proceedings of the 1994 IEEE South African Symposium on, Stellenbosch, 1994, pp. 177-182, doi:10.1109/COMSIG.1994.512459.
dc.identifier.otherdoi:10.1109/COMSIG.1994.512459
dc.identifier.urihttp://hdl.handle.net/10019.1/13203
dc.language.isoen
dc.publisherIEEE
dc.rights.holderIEEE
dc.subjectSpeech processing systemsen_ZA
dc.subjectAutomatic speech recognitionen_ZA
dc.subjectAlgorithmsen_ZA
dc.subjectMathematical modelsen_ZA
dc.subjectCoding theoryen_ZA
dc.titleAdaptive estimation of speech parametersen_ZA
dc.typeConference Paper
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