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Convention Paper

Frame Loss Concealment for Audio Decoders Employing Spectral Band Replication

Authors: Rose, Kenneth; Ryu, Sang-Uk

AES Convention 121 · Paper 6962 · October 2006

Abstract

An efficient frame loss concealment technique is proposed for audio decoders employing spectral band replication (SBR). The high frequency bands of the lost frame are reconstructed by estimating the parametric information involved in the SBR process. Utilizing all SBR data from the previous and the next frame, the high-band envelope is adaptively estimated from the energy evolution of the surrounding frames. The tonality control parameters are determined so as to ensure smooth transition between the lost frame and its neighbors. Subjective quality evaluation demonstrates that the proposed technique achieves better quality of the concealed audio than the technique adopted in the standard aacPlus decoder.

Details

Published in
AES Convention 121
AES Convention
121
Paper number
6962
Publication date
October 6, 2006
Session subject
Computers & Mobile Audio
Affiliation
UCSB (See document for exact affiliation information.)
Type
Convention Paper