Embedded high-quality multichannel audio coding

Dai Yang; Hongmei Ai; Christos Kyriakakis; C.-C. Jay Kuo

doi:10.1117/12.420793

29 March 2001 Embedded high-quality multichannel audio coding

Dai Yang, Hongmei Ai, Christos Kyriakakis, C.-C. Jay Kuo

Proceedings Volume 4313, Media Processors 2001; (2001) https://doi.org/10.1117/12.420793
Event: Photonics West 2001 - Electronic Imaging, 2001, San Jose, CA, United States

Abstract

An embedded high-quality multichannel audio coding algorithm is proposed in this research. The Karhunen-Loeve Transform is applied to multichannel audio signals in the pre- processing stage to remove inter-channel redundancy. Then, after processing of several audio coding blocks, transformed coefficients are layered quantized and the bit stream is ordered according to their importance. The multichannel audio bit stream generated by the proposed algorithm has a fully progressive property, which is highly desirable for audio multicast applications in heterogenous networks. Experimental results show that, compared with the MPEG Advanced Audio Coding algorithm, the proposed algorithm achieves a better performance with both the object Mask-to- Noise-Ratio measurement and the subjective listening test at several different bit rates.

Citation Download Citation

Dai Yang, Hongmei Ai, Christos Kyriakakis, and C.-C. Jay Kuo "Embedded high-quality multichannel audio coding", Proc. SPIE 4313, Media Processors 2001, (29 March 2001); https://doi.org/10.1117/12.420793

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