MDCT audio coding with pulse vector quantizers
Jonas Svedberg, Volodya Grancharov, Sigurdur Sverrisson, Erik Norvell, Tomas Toftgard, Harald Pobloth, Stefan Bruhn
Abstract
This paper describes a novel audio coding algorithm that is a building block in the recently standardized 3GPP EVS codec [1]. The presented scheme operates in the Modified Discrete Cosine Transform (MDCT) domain and deploys a Split-PVQ pulse coding quantizer, a noise-fill, and a gain control optimized for the quantizer's properties. A complexity analysis in terms of WMOPS is presented to illustrate that the proposed Split-PVQ concept and dynamic range optimized MPVQ-indexing are suitable for real-time audio coding. Test results from formal MOS subjective evaluations and objective performance figures are presented to illustrate the competitiveness of the proposed algorithm.
BibTeX
@inproceedings{icassp2015_mdctaudiocodingw,
title = {MDCT audio coding with pulse vector quantizers},
author = {Jonas Svedberg and Volodya Grancharov and Sigurdur Sverrisson and Erik Norvell and Tomas Toftgard and Harald Pobloth and Stefan Bruhn},
booktitle = {ICASSP 2015},
year = {2015}
}