Title :
Harmonic Vector Quantization
Author :
Grancharov, Volodya ; Sverrisson, Sigurdur ; Norvell, Erik ; Toftgard, Tomas ; Svedberg, Jonas ; Pobloth, Harald
Author_Institution :
Ericsson Res., Ericsson AB, Stockholm, Sweden
Abstract :
Audio coding of harmonic signals is a challenging task for conventional MDCT coding schemes. In this paper we introduce a novel algorithm for improved transform coding of harmonic audio. The algorithm does not deploy the conventional scheme of splitting the input signal into a spectrum envelope and a residual, but models the spectral peak regions. The presented coding scheme is part of the recently standardized 3GPP EVS codec.
Keywords :
audio coding; discrete cosine transforms; vector quantisation; audio coding; conventional MDCT coding scheme; harmonic vector quantization; improved transform coding; modified discrete cosine transform; peak regions; spectrum envelope; standardized 3GPP EVS codec; Audio coding; Codecs; Complexity theory; Decoding; Harmonic analysis; Shape; Audio coding; EVS; MDCT; VQ;
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2015 IEEE International Conference on
Conference_Location :
South Brisbane, QLD
DOI :
10.1109/ICASSP.2015.7179110
