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- W1913660584 abstract "Exploiting the residual redundancy in a source coder output stream during the decoding process has been proven to be a bandwidth efficient way to combat the noisy channel degradations. We consider soft reconstruction of LSF parameters in the IS-641 CELP coder transmitted over a noisy channel. We propose two schemes. The first scheme attempts to exploit the interframe residual redundancies in the sequence of received parameters. The second approach exploits both interframe and intraframe residual redundancies. Simulation results are provided which demonstrates the efficiency of the algorithms. Another issue addressed here, is a methodology to efficiently approximate and store the residual redundancies or the a priori transition probabilities. For quantizers with high rates calculating these probabilities require a huge number of source samples, and storing them also require a large amount of memory. These issues can well make the decoder design process an impractical task. The proposed method is based on the classification of the signal domain. The presented schemes provide high quality error concealment solutions for CELP coders." @default.
- W1913660584 created "2016-06-24" @default.
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- W1913660584 date "2002-11-13" @default.
- W1913660584 modified "2023-09-22" @default.
- W1913660584 title "Approximating and exploiting the residual redundancies-applications to efficient reconstruction of speech over noisy channels" @default.
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- W1913660584 doi "https://doi.org/10.1109/icassp.2001.941016" @default.
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