QMF based harmonic spectral band replication

Haishan Z, Villemoes L, Ekstrand P, Disch S, Nagel F, Wilde S, Seng CK, Norimatsu T (2011)

Publication Type: Conference contribution

Publication year: 2011

Book Volume: 1

Pages Range: 66-74

Conference Proceedings Title: 131st Audio Engineering Society Convention 2011

Event location: USA

ISBN: 9781618393968

Abstract

Unified speech and audio coding (USAC) is the next step in the evolution of audio codecs that are standardized by the Moving Picture Experts Group (MPEG). USAC provides consistent quality for music, speech and mixed material, by extending the strength of an audio codec by speech codec functions. Two novel flavors of Spectral Band Replication (SBR) were introduced to enhance the perceptual quality of SBR: the Discrete Fourier Transform (DFT) based and the Quadrature Mirror Filter (QMF) bank harmonic SBR. The DFT-based SBR has higher frequency resolution for the harmomc transposition process, resulting in good sound quality. The QMF-based SBR has significantly lower computational complexity. This paper describes the detailed technical aspects of the low complexity QMF-based harmomc SBR tool within USAC. A complexity comparison and the listening test results are also presented m the paper.

Authors with CRIS profile

Frederik Nagel Professur für Human Centered Data Science

Involved external institutions

Panasonic Holdings Corporation / パナソニック ホールディングス株式会社 JP Japan (JP) Fraunhofer-Institut für Integrierte Schaltungen (IIS) DE Germany (DE)

How to cite

APA:

Haishan, Z., Villemoes, L., Ekstrand, P., Disch, S., Nagel, F., Wilde, S.,... Norimatsu, T. (2011). QMF based harmonic spectral band replication. In 131st Audio Engineering Society Convention 2011 (pp. 66-74). USA.

MLA:

Haishan, Zhong, et al. "QMF based harmonic spectral band replication." Proceedings of the 131st Audio Engineering Society Convention 2011, USA 2011. 66-74.

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