NDLI: A new approach to multipulse LPC coder design

Content Provider	IEEE Xplore Digital Library
Author	Dembo, A. Malah, D.
Copyright Year	1985
Description	Author affiliation: Technion-Israel Institute of Technology, Haifa, Israel (Dembo, A.)
Abstract	Two new ideas for the design of multipulse excited LPC coders are presented in this paper. The first idea relates to improving the extraction of the all-pole filter parameters by taking into account the error weighting function. This function, which takes advantage of the noise masking properties of the ear, is ignored in the conventional covariance and autocorrelation methods. The new approach leads to an iterative algorithm, in which the first iteration is essentially the covariance method. Each new iteration involves estimation of the residual and increases a likelihood function, taking into account the error weighting function. The second idea relates to improving the derivation of the excitation parameters. A recursive algorithm for the optimal choice of the i-th pulse location, given the previously obtained (i-l) pulse locations, is presented. The low complexity of the new algorithm enables its combination with a tree search algorithm, thus giving a solution which is better than the solution of the algorithms reported earlier , when the error weighting function is used
Starting Page	949
Ending Page	952
File Size	94405
Page Count	4
File Format	PDF
DOI	10.1109/ICASSP.1985.1168150
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1985-04-26
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Linear predictive coding Speech synthesis Filters Signal synthesis Erbium Acoustic noise Ear Autocorrelation Iterative algorithms Current measurement
Content Type	Text
Resource Type	Article

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