发明名称 |
LSP VECTOR QUANTIZATION APPARATUS, LSP VECTOR INVERSE-QUANTIZATION APPARATUS, AND THEIR METHODS |
摘要 |
Disclosed is an LPC vector quantization device capable of quantizing an LSP vector by using correlation between divided vectors. The device includes: a vector dividing unit (101) for dividing an inputted LSP vector into a first divided vector and a second divided vector; a first quantization unit (102) for quantizing the first divided vector by using a first codebook formed by a plurality of first code vectors to generate a first code; a prediction vector selection unit (103) for predicting a second divided vector from the first code by using a prediction codebook formed by a plurality of prediction code vectors to create a prediction vector; a prediction residual generation unit (104) for obtaining a residual between the prediction vector and the second divided vector to create a prediction residual vector; a second quantization unit (105) for quantizing the prediction residual vector by using a second codebook formed by a plurality of second code vectors to create a second code; and a multiplexing unit (106) for generating a quantization vector code by multiplexing the first code and the second code.
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申请公布号 |
US2009198491(A1) |
申请公布日期 |
2009.08.06 |
申请号 |
US20070300225 |
申请日期 |
2007.05.11 |
申请人 |
PANASONIC CORPORATION |
发明人 |
SATO KAORU;MORII TOSHIYUKI;YAMANASHI TOMOFUMI |
分类号 |
G10L19/06;G10L19/00;G10L19/07 |
主分类号 |
G10L19/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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