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A Study on the Variable Transmission of xHE-AAC Audio Frame
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  • Journal title : Journal of Broadcast Engineering
  • Volume 21, Issue 3,  2016, pp.357-368
  • Publisher : The Korean Institute of Broadcast and Media Engineers
  • DOI : 10.5909/JBE.2016.21.3.357
 Title & Authors
A Study on the Variable Transmission of xHE-AAC Audio Frame
Lee, Bongho; Yang, Kyutae; Lim, Hyoungsoo; Hur, Namho;
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 Abstract
In DAB+, HE-AAC v2 codec is applied for the fixed rate transmission of audio stream. In case that xHE-AAC codec including USAC, a more efficiency is expected when the variable frame is used in a given same bandwidth compared to the fixed frame transmission. For this to be realized, audio streams need to be multiplexed in a sub-channel before transmission, then a method is required to identify the border of each audio frames. In this paper, the toggled sync byte and additional identification field being sequentially placed between AU borders are proposed in order to deal with the AU border identification. In addition, the Reed-Solomon based error correction code which is compliant to DAB+ is proposed.
 Keywords
Digital radio;DAB+;HE-AAC v2;xHE-AAC;FEC;
 Language
Korean
 Cited by
 References
1.
ETSI EN 300 401 V1.4.1 (2006-06), "Radio Broadcasting Systems; Digital Audio Broadcasting (DAB) to mobile, portable and fixed receivers".

2.
ETSI TS 102 563 V1.2.1 (2010-05), "Digital Audio Broadcasting (DAB); Transport of Advanced Audio Coding (AAC) Audio".

3.
ETSI ES 201 980 V4.1.1 (2014-01), "Digital Radio Mondiale (DRM); System Specification".

4.
ISO/IEC JTC1/SC29/WG11 N14751, "AAC Transport Formats", July, 2014.

5.
ISO/IEC 13818-1, "Information technology -Generic coding of moving pictures and associated audio information: Systems".

6.
ISO/IEC 13818-7, "Information technology -Generic coding of moving pictures and associated audio information - Part 7: Advanced Audio coding (AAC)"

7.
Kyutae Yang, Seungkwon Beack, Bongho Lee, Hyoungsoo Lim, "A Study on USAC Transport Mechanism for Digital Audio Broadcasting Plus", Korean Society of Broadcast Engineers, Summer Conference, July, 2015.

8.
Bongho Lee, Kyutae Yang, myung-Sun Baek, Jaeeun Jeong, Hyeoungsoo Lim, Namho Hur, " USAC Stream Delivery over Digital Radio Network", International Workshop on Advanced Image Technology, January, 2016.