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Dual-Domain Connection Scheme for HE-AAC and MPEG Surround  

Pang, Hee-Suk (Dept. of Electronics Engineering, Sejong University)
Publication Information
The Journal of the Acoustical Society of Korea / v.28, no.1E, 2009 , pp. 29-34 More about this Journal
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
High Efficiency Advanced Audio Coding; MPEG Surround; Quadrature mirror filter; Dual-domain connection;
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