Title
Flexible and scalable transform-domain codebook for high bit rate CELP coders.
Abstract
The Code-Excited Linear Prediction (CELP) model is very efficient in coding speech at low bit rates. However, if the bit rate of the coder is increased, the CELP model does not gain in quality as quickly as other approaches. Moreover, the computational complexity of the CELP model generally increases significantly at higher bit rates. In this paper we focus on a technique that aims to overcome these limitations by means of a special transform-domain codebook within the CELP model. We show by the example of the AMR-WB codec that the CELP model with the new flexible and scalable codebook improves the quality at high bit rates at no additional complexity cost.
Year
Venue
Keywords
2017
European Signal Processing Conference
Speech coding,ACELP,AMR-WB
Field
DocType
ISSN
Code-excited linear prediction,Vector sum excited linear prediction,Computer science,Algorithm,Speech recognition,Linear prediction,Harmonic Vector Excitation Coding,Low bit,Codec,Computational complexity theory,Codebook
Conference
2076-1465
Citations 
PageRank 
References 
0
0.34
4
Authors
4
Name
Order
Citations
PageRank
Vaclav Eksler1325.92
Bruno Bessette24211.14
Milan Jelínek3364.19
Tommy Vaillancourt4838.83