Paper Info
Title
An efficient method for multi-tap Long Term Predictor (ltp) transcoding: Application to ITU-T G723.1
Abstract
Network interconnections cause interoperability problems between different speech coding formats. Today, tandem (decoding/re-encoding) is currently used in communication chains. To overcome tandem drawbacks (complexity, quality degradation, delay), intelligent solutions have been proposed to efficiently transcode CELP coders parameters. This paper focuses on CELP Long Term Predictor (LTP) parameters transcoding. First, a survey of LTP transcoding methods is given. Then a novel method is described for multitap LTP transcoding. The multitap gain vector codebook search is restricted to ordered subsets selected from LTP gain parameter of the first coder. This technique is applied to intelligent transcoding towards ITU-T G. 723.1. It achieves same quality as tandem while strongly reducing complexity.
Year
Venue
Keywords
2006
Florence
decoding,prediction theory,speech codecs,speech coding,transcoding,vectors,celp coders parameters,celp long term predictor parameter transcoding,itu-t g723.1,ltp gain parameter,ltp parameter transcoding,ltp transcoding methods,code excited linear prediction,communication chains,decoding-reencoding,intelligent transcoding,interoperability problems,multitap ltp transcoding,multitap gain vector codebook search,multitap long term predictor transcoding,network interconnections,speech coding formats
Field
DocType
ISSN
Long term predictor,Gain parameter,Transcoding,Speech coding,Code-excited linear prediction,Interoperability,Computer science,Speech recognition,Decoding methods,Computer engineering,Codebook
Conference
2219-5491
Citations 
PageRank 
References 
0
0.34
0
Authors
2
Name
Order
Citations
PageRank
Claude Lamblin1175.50
Mohamed Ghenania231.11