发明名称 |
VARIABLE BIT RATE LPC FILTER QUANTIZING AND INVERSE QUANTIZING DEVICE AND METHOD |
摘要 |
A multi-reference quantization device and method for quantizing an input LPC filter, comprises a plurality of differential quantizers using respective, different references, and a selector of a reference amongst the different references of the differential quantizers using a reference selection criterion. The input LPC filter is differentially quantized by the differential quantizer using the selected reference. A device and method for inverse quantizing a multi-reference differentially quantized LPC filter extracted from a bitstream, comprises an extractor from the bitstream of information about a reference amongst a plurality of possible references used for quantizing the multi-reference differentially quantized LPC filter, and a differential inverse quantizer using the reference corresponding to the extracted reference information to inverse quantize the multi-reference differentially quantized LPC filter. |
申请公布号 |
EP2313887(A1) |
申请公布日期 |
2011.04.27 |
申请号 |
EP20090793769 |
申请日期 |
2009.07.10 |
申请人 |
VOICEAGE CORPORATION |
发明人 |
BESSETTE, BRUNO;GOURNAY, PHILIPPE;SALAMI, REDWAN |
分类号 |
G10L19/06;G10L19/18;H03M7/30 |
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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