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http://dx.doi.org/10.5909/JBE.2020.25.2.233

A 3D Audio Core-Codec Employing an Improved Buffer Control Method  

Kim, Rin Chul (Dept. of ECE, Univ. of Seoul)
Publication Information
Journal of Broadcast Engineering / v.25, no.2, 2020 , pp. 233-241 More about this Journal
Abstract
In this paper, a new buffer control method is proposed for improving the performance of the frequency domain part of the 3D audio (3DA) core codec. For the proposed buffer control method, we first combine the 3DA RM9 with the 3GPP AAC buffer control method which includes the psychoacoustic model and rate-distortion control process with the spectral hole avoidance algorithm. Then, we revise the 3GPP buffer control method so as to achieve a faithful bit allocation to the frames with higher activity. With the MUSHRA test, we prove that the proposed buffer control method demonstrates better performance than the 3DA RM9 and 3GPP AAC.
Keywords
audio coding; 3DA RM; core codec; 3GPP AAC; buffer control method;
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