European Conference on Speech Technology

Edinburgh, Scotland, UK
September 1987

A NOVEL SPECTRUM ESTIMATION ALGORITHM OFFERING ENHANCED FEATURE RESOLUTION IN LPC SPECTRA

G. Duncan, Mervyn A. Jack

Centre for Speech Technology Research, University of Edinburgh, Edinburgh, UK

A novel formant estimation technique based on a pole-focusing mechanism applied to linear predictive coding (LPC) spectra is presented. The pole focusing technique is shown to provide superior feature resolution compared to standard LPC analysis. In its application to formant estimation from the speech signal, the technique is found to be the antithesis of standard LPC analysis, requiring no preemphasis, and demanding use of very large model orders. The technique has the additional benefit of obviating any application of model-order determining criteria through its concurrent use of within-frame increasing model order and off-axis spectral estimation.

Full Paper

Bibliographic reference.  Duncan, G. / Jack, Mervyn A. (1987): "A NOVEL SPECTRUM ESTIMATION ALGORITHM OFFERING ENHANCED FEATURE RESOLUTION IN LPC SPECTRA", In ECST-1987, 1254-1257.