Fast-Integer Optimization for WMA Compatible Decoder on Embedded System without FPU

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Title:	Fast-Integer Optimization for WMA Compatible Decoder on Embedded System without FPU
Other Titles:	無FPU之嵌入式系統WMA相容解碼器之快速整數最佳化設計
Authors:	Hwang, Lain-jinn;Shih, Chien-chou;Chen, Wei;Kuo, I-ting
Contributors:	淡江大學資訊工程系
Keywords:	Ebedded Sstem;Foating Pint;Fxed-point;WMA
Date:	2008-12-01
Issue Date:	2010-08-09 18:51:05 (UTC+8)
Publisher:	淡江大學
Abstract:	This paper presents a general software optimization technique which enables an embedded system to playWindows Media Audio (WMA) fluently without the support of floating point unit (FPU). We employ fixed-point arithmetic operations, instead of floating-point, to optimize the computational overhead during the audio decoding process. Thus the proposed performance improvements by programming in C language are useful for the implementation of the real-timeWMAcompatible decoder on ARM920T based embedded system. This work achieved performance increase by reducing the CPU usage rate from 100% to 45% with great precision on the average around 1-bit error.
Relation:	淡江理工學刊=Tamkang Journal of Science and Engineering 11(4), pp.375-386
DOI:	10.6180/jase.2008.11.4.07
Appears in Collections:	[Graduate Institute & Department of Computer Science and Information Engineering] Journal Article [Graduate Institute & Department of Information and Communication] Journal Article

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