Low power techniques for MP3 audio decoder using subband cut-off approach

Tsung Han Tsai, Chun Kai Wang, Chun Nan Liu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

In this paper low power techniques for MP3 audio decoder are used based on a phenomenon of zero-filled subbands. By our analysis, large part of subbands contains useless zero-valued data, which can be cut-off. We propose an effective architecture to gain incremental improvements in power consumption and computation complexity. In DWIMDCT block, the computational complexity can be reduced to 34% when we combine the subband cut-off technique and our proposed fast algorithm. In SIMDCT block of Synthesis filterbank, the same technique can be applied and the computational complexity can be reduced to 17%. This subband cut-off approach is simple and can be easily integrated with other designs.

Original languageEnglish
Title of host publicationSiPS 2005
Subtitle of host publicationIEEE Workshop on Signal Processing Systems - Design and Implementation, Proceedings
Pages268-271
Number of pages4
DOIs
StatePublished - 2005
EventSiPS 2005: IEEE Workshop on Signal Processing Systems - Design and Implementation - Athens, Greece
Duration: 2 Nov 20054 Nov 2005

Publication series

NameIEEE Workshop on Signal Processing Systems, SiPS: Design and Implementation
Volume2005
ISSN (Print)1520-6130

Conference

ConferenceSiPS 2005: IEEE Workshop on Signal Processing Systems - Design and Implementation
Country/TerritoryGreece
CityAthens
Period2/11/054/11/05

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