发明名称 |
LSF quantizer for wideband speech coder |
摘要 |
The LSF quantizer for a wideband speech coder comprises a subtracter for receiving an input LSF coefficient vector and removing a DC component from it; a memory-based vector quantizer and a memoryless vector quantizer for respectively receiving the DC-component-removed LSF coefficient vector and independently quantizing the same; a switch for receiving quantized vectors respectively quantized by the memory-based vector quantizer and the memoryless vector quantizer, selecting a quantized vector that has less quantized error that is a difference between the received quantized vector and the input LSF coefficent vector from among the received quantized vectors, and outputting the same; and an adder for adding the quantized vector selected by the switch to the DC component of the LSF coefficient vector.
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申请公布号 |
US2002138260(A1) |
申请公布日期 |
2002.09.26 |
申请号 |
US20010033649 |
申请日期 |
2001.12.27 |
申请人 |
KIM DAE-SIK;CHOI SONG-IN;YOON BYUNG-SIK;KIM HYUNG-JUNG;KANG SANG-WON;CHI SANG-HYUN |
发明人 |
KIM DAE-SIK;CHOI SONG-IN;YOON BYUNG-SIK;KIM HYUNG-JUNG;KANG SANG-WON;CHI SANG-HYUN |
分类号 |
G10L19/04;G10L19/00;G10L19/06;(IPC1-7):G10L19/00 |
主分类号 |
G10L19/04 |
代理机构 |
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代理人 |
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地址 |
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