Design and Implementation of MPEG-4 AAC Decoder on ARM Embedded System for CMMB Receiver

Author

Yan, Ming ; Hu, Guorong ; Wang, Jia

Author_Institution

GxSOC Res. Inst. Commun., Univ. of China, Beijing, China

fYear

2009

fDate

20-22 Sept. 2009

Firstpage

1

Lastpage

3

Abstract

CMMB (China mobile multimedia broadcasting) adopts MPEG-4 HE AAC (high efficiency advanced audio coding) as its sound coding technology in video broadcast. In this paper, we first introduce the decoding flow of MPEG-4 HE AAC and its two key technologies, SBR (spectral band replication) and interbank. The IMDCT function was optimized especially because of its complicated calculation. Then we implemented the decoder into ARM embedded system and analyzed the complexity of each function in Linux OS. Test results indicate that the decoder can decode HE AAC bitstream with real time on the embedded system with ARM920T core.

Keywords

Linux; audio coding; channel bank filters; data compression; decoding; digital audio broadcasting; digital video broadcasting; embedded systems; microprocessor chips; mobile communication; television receivers; ARM embedded system; CMMB receiver; China mobile multimedia broadcasting; IMDCT function; Linux OS; MPEG-4 AAC decoder; SBR; advanced audio coding; decoding; filterbank; sound coding technology; spectral band replication; video broadcasting; Audio coding; Broadcast technology; Decoding; Digital multimedia broadcasting; Embedded system; Helium; Linux; MPEG 4 Standard; Multimedia communication; System testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Management and Service Science, 2009. MASS '09. International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-4638-4

Electronic_ISBN

978-1-4244-4639-1

Type

conf

DOI

10.1109/ICMSS.2009.5304571

Filename

5304571