Multi-pulse type coding system with correlation calculation by backward-filtering operation for multi-pulse searching
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United States of America Patent
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Apr 13, 1993
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N/A
app pub date -
Jan 21, 1992
filing date -
Apr 8, 1987
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Abstract
Speech signal encoding at a low bit rate is realized by decreasing the number of arithmetic operations required to determine LPC parameters in a backward processing unit. These parameters are determined and updated by filtering, rather than by impulse response. In this manner, it is not necessary to use previously-calculated parameters in updating.
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