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A Computationally Efficient CELP Codec with Stochastic Vectorquantisation of LPC Parameters

A Computationally Efficient CELP Codec with Stochastic Vectorquantisation of LPC Parameters
A Computationally Efficient CELP Codec with Stochastic Vectorquantisation of LPC Parameters
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.
140-143
Salami, R A
63208dd1-2af2-49c2-a495-dfee08fc60b8
Hanzo, L
66e7266f-3066-4fc0-8391-e000acce71a1
Appleby, D
7afc923d-6c54-42bf-ad29-6e0ceaa200f7
Salami, R A
63208dd1-2af2-49c2-a495-dfee08fc60b8
Hanzo, L
66e7266f-3066-4fc0-8391-e000acce71a1
Appleby, D
7afc923d-6c54-42bf-ad29-6e0ceaa200f7

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

Record type: Conference or Workshop Item (Paper)

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.

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Published date: September 1989
Additional Information: Event Dates: September 1989 Organisation: URSI Address: Erlangen, West Germany
Venue - Dates: URSI'89, Germany, 1989-09-01
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 251411
URI: http://eprints.soton.ac.uk/id/eprint/251411
PURE UUID: 3db064e4-0518-400c-98f9-b650f5592e35
ORCID for L Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

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Date deposited: 14 Mar 2002
Last modified: 18 Jul 2017 10:09

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Contributors

Author: R A Salami
Author: L Hanzo ORCID iD
Author: D Appleby

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