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Comparative Study of Wideband Speech Spectral Quantization Schemes

Comparative Study of Wideband Speech Spectral Quantization Schemes
Comparative Study of Wideband Speech Spectral Quantization Schemes
In this treatise a range of Line Spectrum Frequency (LSF) Vector Quantization (VQ) schemes were studied comparatively, which were designed for wideband speech codecs. Both predictive arrangements and memoryless schemes were investigated. Specifically, both memoryless Split Vector Quantization (SVQ) and Classified Vector Quantization (CVQ) were studied. These techniques exhibit a low complexity and high channel error resilience, but require high bit rates for maintaining high speech quality. By contrast, Predictive Vector Quantizers (PVQ) offer a reduced Spectral Distortion (SD) performance, although they are sensitive to channel error propagation. It is shown that the family of the so-called Safety-Net Vector Quantizers (SNVQ) offers a good design compromise in this sense.
181-187
Guibé, G
49ecd854-6152-4044-8e06-9175259cc220
How, H T
b146a378-18e1-4fa0-88ae-f0fbf889220b
Hanzo, L
66e7266f-3066-4fc0-8391-e000acce71a1
Guibé, G
49ecd854-6152-4044-8e06-9175259cc220
How, H T
b146a378-18e1-4fa0-88ae-f0fbf889220b
Hanzo, L
66e7266f-3066-4fc0-8391-e000acce71a1

Guibé, G, How, H T and Hanzo, L (2000) Comparative Study of Wideband Speech Spectral Quantization Schemes. 3rd ITG Conference on Source and Channel Coding. 17 - 19 Jan 2000. pp. 181-187 .

Record type: Conference or Workshop Item (Paper)

Abstract

In this treatise a range of Line Spectrum Frequency (LSF) Vector Quantization (VQ) schemes were studied comparatively, which were designed for wideband speech codecs. Both predictive arrangements and memoryless schemes were investigated. Specifically, both memoryless Split Vector Quantization (SVQ) and Classified Vector Quantization (CVQ) were studied. These techniques exhibit a low complexity and high channel error resilience, but require high bit rates for maintaining high speech quality. By contrast, Predictive Vector Quantizers (PVQ) offer a reduced Spectral Distortion (SD) performance, although they are sensitive to channel error propagation. It is shown that the family of the so-called Safety-Net Vector Quantizers (SNVQ) offers a good design compromise in this sense.

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More information

Published date: January 2000
Additional Information: Event Dates: 17-19 January 2000 Organisation: ITG Address: Munich, Germany
Venue - Dates: 3rd ITG Conference on Source and Channel Coding, 2000-01-17 - 2000-01-19
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 255714
URI: https://eprints.soton.ac.uk/id/eprint/255714
PURE UUID: 6b2e3896-2aab-4684-81bd-9d4e6dc16a9c
ORCID for L Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 05 Apr 2001
Last modified: 06 Jun 2018 13:14

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Contributors

Author: G Guibé
Author: H T How
Author: L Hanzo ORCID iD

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