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Analytic pole-zero modelling of speech spectra

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2 Author(s)
Owens, F.J. ; The Ulster Polytechnic, United Kingdom ; Linggard, R.

This paper describes an analytic technique, whereby the transfer function of a pole-zero model of the speech production process may be derived from the speech signal. The process involves fitting the model to the smoothed short-time amplitude spectrum which is derived by processing the speech signal through a bank of fourth-order, bandpass filters and cepstrally smoothing the output. The order of the pole-zero model is defined by twice the number of spectral maxima in the derived spectrum. The fitting criteria are specified on a perceptual basis rather than the usual least-squared error, the model being constrained to fit exactly the maxima and minima of the spectral curve.

Published in:

Acoustics, Speech, and Signal Processing, IEEE International Conference on ICASSP '82.  (Volume:7 )

Date of Conference:

May 1982

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