The Journal of the Acoustical Society of Korea

The Acoustical Society of Korea (한국음향학회)
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Dual-Domain Connection Scheme for HE-AAC and MPEG Surround

  • Pang, Hee-Suk (Dept. of Electronics Engineering, Sejong University)
  • Published : 2009.03.31
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Abstract

MPEG4 High Efficiency Advanced Audio Coding (HE-AAC) and MPEG Surround are one of the most efficient combinations for low bit rate multi-channel audio coding. Based on the fact that these two codecs have identical quadrature mirror filter (QMF) analysis and synthesis structures, we propose a dual-domain connection scheme for the codecs. Specifically two time-domain connection methods are analyzed and compared to the QMF subband-domain connection method. Experimental results show that both the time-domain connection methods cause no subjective sound quality degradation compared to the QMF subband-domain connection method, which verifies that one can select either of them depending on application scenarios.

Keywords

References

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