A MDCT based harmonic spectral bandwidth extension method

Neukam C, Nagel F, Schuller G, Schnabel M (2013)

Publication Type: Conference contribution

Publication year: 2013

Journal

2013 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)

Pages Range: 566-570

Conference Proceedings Title: ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings

Event location: CAN

ISBN: 9781479903566

DOI: 10.1109/ICASSP.2013.6637711

Abstract

Modern audio coding technologies apply methods of bandwidth extension (BWE) to efficiently represent audio data at low bitrates. An established method is the well-known spectral band replication (SBR) that is part of MPEG High Efficiency Advanced Audio Coding (HE-AAC). However, if the signal features a distinct harmonic spectral structure, the use of these methods tends to result in audible artifacts, because the harmonic structure is not reconstructed correctly. In this paper a bandwidth extension method is proposed which eliminates the undesirable effects and allows for an efficient implementation in the Modified Discrete Cosine Transform (MDCT) domain. The proposed Harmonic Spectral Bandwidth Extension (HSBE) method uses arbitrary frequency shifts for modulating the replicated spectrum in a way that the harmonic structure of the signal is preserved. A listening test demonstrates the advantage of the proposed method compared to the state of the art. © 2013 IEEE.

Authors with CRIS profile

Frederik Nagel Professur für Human Centered Data Science

Involved external institutions

Fraunhofer-Institut für Integrierte Schaltungen (IIS) DE Germany (DE) Technische Universität Ilmenau DE Germany (DE)

How to cite

APA:

Neukam, C., Nagel, F., Schuller, G., & Schnabel, M. (2013). A MDCT based harmonic spectral bandwidth extension method. In ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings (pp. 566-570). CAN.

MLA:

Neukam, Christian, et al. "A MDCT based harmonic spectral bandwidth extension method." Proceedings of the 2013 38th IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2013, CAN 2013. 566-570.

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