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Safety-net pyramid VQ of LSF parameters for wideband speech codecs

Title
Safety-net pyramid VQ of LSF parameters for wideband speech codecs
Author
이찬길
Issue Date
2001-05
Publisher
IEE-INST ELEC ENG
Citation
Electronics Letters, v. 37, issue. 11, page. 724-726
Abstract
The authors propose a predictive pyramid VQ (PPVQ) that uses the safety-net concept to quantise the LSF parameters of wideband speech. A first-order auto-regressive (AR) predictor is used to predict the LSF parameters. To quantise the prediction error signal effectively, a pyramid VQ (PVQ) is used while a memoryless PVQ is used to encode low-correlation frames. By combining the PPVQ and the memoryless PVQ, denoted 'safety-net pyramid VQ', the advantages of quantisation methods can be utilised. The average SD value of a safety-net pyramid VQ is 035 dB less than that of a predictive split VQ (PSVQ). The safety-net pyramid VQ also requires low complexity and does not require any memory for the codebook storage.
URI
https://digital-library.theiet.org/content/journals/10.1049/el_20010492https://www.proquest.com/docview/1621271393/fulltextPDF/F43E65AFC3E845B3PQ/1?accountid=11283https://repository.hanyang.ac.kr/handle/20.500.11754/158396
ISSN
0013-5194; 1350-911X
DOI
10.1049/el:20010492
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ELECTRICAL ENGINEERING(전자공학부) > Articles
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