NDLI: Real-time audio error concealment method based on sinusoidal model

Content Provider	IEEE Xplore Digital Library
Author	Huan Hou Weibei Dou
Copyright Year	2008
Description	Author affiliation: Dept. of Electron. Eng., Tsinghua Univ., Bejing (Huan Hou; Weibei Dou)
Abstract	This paper proposes a sinusoidal model based on modified sinusoidal analysis and synthesis for the error concealment of lost frames. The parameters of the sinusoidal model are adjusted according to the property of the audio signals. It is applied to MPEG-2 AAC decoder for an error concealment of decoder based only. An analysis and synthesis of the windowed previous frame of the lost one and the residual samples are used to synthesize a new frame. Then overlap-add mechanism between the synthesized frame and the residual samples is applied to reconstruct the lost frame. This method can provide an audio quality with 1.3 average ODG score improvement under the loss rate of frame up to 10% without increasing the algorithm delay of the AAC decoding system. It is implemented on fixed-point DSPs, and the computational complexity is comparative to the optimized version of the decoder.
Starting Page	22
Ending Page	28
File Size	265441
Page Count	7
File Format	PDF
ISBN	9781424417230
DOI	10.1109/ICALIP.2008.4590009
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-07-07
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Analytical models Transform coding Speech Nuclear magnetic resonance Decoding Complexity theory Synthetic aperture sonar
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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