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Watermark-Aided Pre-Echo Reduction in Low Bit-Rate Audio Coding

Low bit-rate coding/decoding with standard AAC and MP3 coders smoothes attacks in transient signals and increases the pre-echo. A system is proposed for reducing pre-echo artifacts by embedding temporal envelope correction as watermarking data, which eliminates the need for an auxiliary communications channel. The restored signal is reconstructed at the receiver from two components: the decoded signal generated by the core decoder, and the temporal envelope of the original signal, which is represented by a few parameters that are transmitted as embedded data in the audio signal.

Authors: Samaali, Imen; Mahé, Gaël; Turki, Monia
Affiliations: LIPADE, University Paris Descartes, Sorbonne Paris Cité, France; U2S, National Engineering School of Tunis, University Tunis, El Manar, Tunisia(See document for exact affiliation information.)
JAES Volume 60 Issue 6 pp. 431-443; June 2012 Import into BibTeX

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