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. Test results indicate that the presented algorithm outperforms the conventional coding concept.
Full abstract in IEEE Xplore, DOI: 10.1109/ICASSP.2015.7179110
Volodya Grancharov, Sigurdur Sverrisson, Erik Norvell, Tomas Toftgård, Jonas Svedberg, Harald Pobloth.
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