A Computationally Efficient CELP Codec with Stochastic Vectorquantisation of LPC Parameters


Salami, R A, Hanzo, L and Appleby, D (1989) A Computationally Efficient CELP Codec with Stochastic Vectorquantisation of LPC Parameters. In, URSI'89, Erlangen, W-, Germany, , 140-143.

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Description/Abstract

In this contribution, computationally efficient CELP structures are proposed for low-complexity speech coding below 6.4Kbits/s. We also report on a new approach for low bit rate speech coding using binary excitation pulses, which delivers the quality of the CELP codec without the excitation codebook storage, and with a very simple excitation determination procedure. Furthermore, we propose a switched-adaptive stochastic vector quantisation scheme for quantising the line spectrum frequencies using 22 bits without any perceivable spectral distortion.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Event Dates: September 1989 Organisation: URSI Address: Erlangen, West Germany
Divisions: Faculty of Physical Sciences and Engineering > Electronics and Computer Science > Comms, Signal Processing & Control
ePrint ID: 251411
Date Deposited: 14 Mar 2002
Last Modified: 27 Mar 2014 19:52
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/251411

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