Method and device for compressed-domain packet loss concealment

Details Method and device for compressed-domain packet loss concealment Method and device for compressed-domain packet loss concealment

2006-01-10

2006-01-10

Knepper, David D. (Department: 2654)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

Reexamination Certificate

active

06985856

ABSTRACT:
An error concealment method and device for recovering lost data in the AAC bitstream in the compressed domain. The bitstream are partitioned into frames each having a plurality of data parts including the header/global gain, scale factors and QMDCT coefficients. The data parts are stored in a plurality of buffers, so that if one or more data parts of a current frame is corrupted or lost, the corresponding data part in the neighboring frames is used to conceal the errors in the current frame.

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Brandenburg et al., ISO-MPEG-1 Audio: A Generic Standard for Coding of High-Quality Digital Audio, 92ndConvention of the Audio Engineering Society, Vienna, Austria, Mar. 24-27, 1992, revised Jul. 15, 1994, pp. 780-792.
“Error Robustness Scheme for Perceptually Coded Audio Based on Interframe Shuffling of Samples”; J. Korhonen; Proc. of IEEE International Conference on Acoustics, Speech and Signal Processing 2002, Orlando, Florida; pp. 2053-2056; May 2002.

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