Optimization of AVS Audio Decoder Implemented on RISC Core

Author

Lei, B.Y. ; Lo, Kwok-Tung ; Lei, Haijun

Author_Institution

Dept. of Electron. & Inf. Eng., Hong Kong Polytech. Univ., Hong Kong

fYear

2008

fDate

20-22 Dec. 2008

Firstpage

32

Lastpage

35

Abstract

This paper proposes the software optimization for implementing AVS-P3 realtime on ARM 9. The optimization for embedded systems has been recognized as a key issue in improving cost as well as performance. In this work, we describe our experience in optimizing AVS audio decoder based on ARM9. We mainly optimize the inversed IntMDCT, CBC and dequantization modules. The test result shows that the decoding speed improves 10 times than the original AVS audio decoder decoding stereo wave signal with the 128 kbps bitrate and 48 KHz sampling rate. Meanwhile, the memory space is reduced from 130.78 KB to 59.91 KB, achieved 54.2% improvement.

Keywords

audio coding; decoding; embedded systems; optimisation; reduced instruction set computing; video coding; AVS audio decoder optimization; RISC core; dequantization module; embedded system; signal sampling; software optimization; stereo wave signal; Bit rate; Broadband communication; Data structures; Decoding; Embedded system; Optimization methods; Portable media players; Reduced instruction set computing; Sampling methods; Streaming media;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer and Electrical Engineering, 2008. ICCEE 2008. International Conference on

Conference_Location

Phuket

Print_ISBN

978-0-7695-3504-3

Type

conf

DOI

10.1109/ICCEE.2008.168

Filename

4740941