Fast filterbanks for the low power MPEG high efficiency advanced audio coding decoder

Shih Way Huang, Tsung Han Tsai, Liang Gee Chen

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

2 Scopus citations

Abstract

The paper derives fast decomposition for the Quadrature Mirror Filter (QMF) banks of the Low power Spectral Band Replication (SBR) tools in the MPEG High Efficiency Advanced Audio Coding (HE AAC) decoder. The original computation-intensive matrixing operations in the filterbanks are decomposed into fundamental Discrete Cosine Transform (DCT) types and simple permutations. Hence, the computational complexity can be effectively reduced by using fast algorithms for DCT.

Original languageEnglish
Title of host publicationAudio Engineering Society - 118th Convention Spring Preprints 2005
Pages1432-1437
Number of pages6
StatePublished - 2005
Event118th Convention Spring Preprints 2005 - Barcelona, Spain
Duration: 28 May 200531 May 2005

Publication series

NameAudio Engineering Society - 118th Convention Spring Preprints 2005
Volume3

Conference

Conference118th Convention Spring Preprints 2005
Country/TerritorySpain
CityBarcelona
Period28/05/0531/05/05

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