New class of analysis by synthesis LPC coders : multipulse excited subband LPC

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Original languageEnglish
Pages (from-to)240-243
Journal / PublicationIEE Conference Publication
Publication statusPublished - 1991


Title6th International Conference on Digital Processing of Signals in Communications
PlaceUnited Kingdom
Period2 - 6 September 1991


A new class of analysis-by-synthesis LPC coding algorithms, called Multipulse Excited Subband (MESB), is presented. The proposed system differs from the conventional analysis-by-synthesis LPC systems in that the excitation sequence is defined by a sparse sequence of pulses in each subband. The system employs a closed-loop optimization procedure which evades aliasing distortion and interband leakage introduced by the imperfection of the filters.