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Encoding device

阅读:90发布:2022-06-16

专利汇可以提供Encoding device专利检索,专利查询,专利分析的服务。并且PURPOSE: To encode a voice efficiently by providing a filter which outputs the composite signal of a selected residue signal waveform and a predication signal and outputting an index value which specifies the residue signal waveform according to the output of the filter by a residue signal waveform selecting means.
CONSTITUTION: a linear predicative analyzer 13 takes a linear predicative analysis to extract linear predictive vectors, which are classified by kinds through a sorter 27 which uses a vector quantizing method, thereby outputting indexed (j) as index signals for classified spectrum shapes. According to the indexes (j), an optimum code work selector 22 selects a code book to be used among code books 16 which are prepared. Then a code word which is amplified b;y a gain multiplier 17 is outputted to the composite filter consisting of a linear predictor 14, an adder 18, etc. The composite filter inputs the amplified code work and outputs a composite signal vector S'. Consequently, the encoding device capable of high-efficiency encoding is obtained.
COPYRIGHT: (C)1992,JPO&Japio,下面是Encoding device专利的具体信息内容。

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