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  • Research Article
  • Open Access
  • Multichannel Coding of Applause Signals

    EURASIP Journal on Advances in Signal Processing20072008:531693

    • Received: 21 December 2006
    • Accepted: 26 July 2007
    • Published:


    We develop a parametric multichannel audio codec dedicated to coding signals consisting of a dense series of transient-type events. These signals of which applause is a typical example are known to be problematic for such audio codecs. The codec design is based on preservation of both timbre and transient-type event density. It combines a very low complexity and a low parameter bit rate (0.2 kbps). In a formal listening test, we compared the proposed codec to the recently standardised MPEG Surround multichannel codec, with an associated parameter bit rate of 9 kbps. We found the new codec to have a significantly higher audio quality than the MPEG Surround codec for the two multichannel applause signals under test. Though this seems promising, the technique presented is not fully mature, for example, because issues related to integration of the proposed codec in the MPEG Surround codec were not addressed.


    • Information Technology
    • Quantum Information
    • Full Article
    • Event Density
    • Listening Test

    Publisher note

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    Authors’ Affiliations

    Digital Signal Processing Group, Philips Research, High Tech Campus 36, Eindhoven, 5656 AE, The Netherlands


    © Gerard Hotho et al. 2008

    This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.