An audio enhancement method in compressed domain - Details

Author：

Bao, Feng (Bao, Feng.) | Deng, Feng (Deng, Feng.) | Bao, Chang-Chun (Bao, Chang-Chun.) (Scholars：鲍长春) | Jia, Mao-Shen (Jia, Mao-Shen.)

Indexed by：

EI Scopus

Abstract：

An　audio　enhancement　method　based　on　AAC　bitstream　is　proposed　in　this　paper.　First,　the　improved　weighted　recursive　averaging　(IWRA)　algorithm　is　introduced　to　estimate　the　noise.　Second,　the　β-order　minimum　mean-square　error　(β-MMSE)　enhancement　approach　is　employed　to　obtain　the　spectral　amplitude　of　audio　signals.　Finally,　the　IWRA　method　and　β-MMSE　method　are　applied　into　MPEG　AAC　codec　for　suppressing　the　noises　included　in　AAC　bitstream.　The　objective　and　subjective　listening　test　results　show　that　the　proposed　method　yields　good　noise　reduction　results,　the　performance　is　better　than　reference　methods.　©　2012　IEEE.

Keyword：

Binary sequences Acoustic noise Signal processing Audio acoustics Mean square error

Author Community：

[ 1 ] [Bao, Feng]School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Deng, Feng]School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Bao, Chang-Chun]School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Jia, Mao-Shen]School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China