LSP vector quantization device, LSP vector opposite quantization device, and these methods

摘要

The LPC vector quantization device and the like which can quantize LSP vector making use of the correlation characteristic between divided vectors is disclosed. In this device, vector divided section 101 to divide the LSP vector which is input with into 1st divided vector and 2nd divided vector, 1st quantization section 102 to quantize 1st divided vector making use of the 1st cord/code book which consists of plural 1st cord/code vectors, to form the 1st mark, estimate vector selective section 103 to estimate 2nd divided vector from the 1st mark making use of the estimate cord/code book which consists of plural estimate cord/code vectors, to form estimate vector, as for estimate remainder formation department 104, remainder of estimate vector and 2nd divided vectorIt seeks, forms estimate remainder vector, 2nd quantization section 105 quantizes estimate remainder vector making use of the 2nd cord/code book which consists of plural 2nd cord/code vectors, forms the 2nd mark, multiplexing section 106, the 1st mark and multiplexing the 2nd mark, forms the quantization vector mark.