IIR QMF-Bank Design for Speech and Audio Subband Coding
Löllmann H, Hildenbrand M, Geiser B, Vary P (2009)
Publication Language: English
Publication Type: Conference contribution, Conference Contribution
Publication year: 2009
Pages Range: 269-272
Conference Proceedings Title: Proceedings of IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA)
Event location: New Paltz
ISBN: 978-1-42443-679-8
Abstract
A new speech and audio codec has been submitted recently to ITU-T by a consortium of Huawei and ETRI as candidate proposal for the super-wideband and stereo extensions of ITU-T Rec. G.729.1 and G.718. This hierarchical codec with bit rates from 8-64 kbit/s relies on a subband splitting by means of a quadraturemirror filter-bank (QMF-bank). For this, an allpass-based QMF-bank is used whose design and implementation is presented in this contribution. This IIR filter-bank allows to achieve a significantly lower signal delay in comparison to the traditional FIR QMF-bank solution without a compromise for the speech and audio quality.
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How to cite
APA:
Löllmann, H., Hildenbrand, M., Geiser, B., & Vary, P. (2009). IIR QMF-Bank Design for Speech and Audio Subband Coding. In IEEE (Eds.), Proceedings of IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA) (pp. 269-272). New Paltz, US.
MLA:
Löllmann, Heinrich, et al. "IIR QMF-Bank Design for Speech and Audio Subband Coding." Proceedings of the IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA), New Paltz Ed. IEEE, 2009. 269-272.
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