发明名称 |
Audio encoding device, decoding device, and method capable of flexibly adjusting the optimal trade-off between a code rate and sound quality |
摘要 |
Provided are an audio encoding device and an audio decoding device, by which optimal trade-off between code rates and sound quality can be flexibly adjusted. A variable frequency segmentation encoding unit includes: difference degree calculation units for calculating a difference degree between first and second input signals depending on a segmentation method for segmenting a frequency band into sub-bands; a selection unit for selecting one of the segmentation methods; and a difference degree and segmentation information encoding unit for encoding the selected method and the difference degree for each sub-band. A variable frequency segment decoding unit includes: a segmentation information decoding unit for decoding the segmentation information to learn the segmentation method; a switching unit for outputting a difference degree code corresponding to the segmentation method; and difference degree decoding units for decoding the difference degree code to the difference degree for each sub-band.
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申请公布号 |
US7860721(B2) |
申请公布日期 |
2010.12.28 |
申请号 |
US20050597558 |
申请日期 |
2005.09.13 |
申请人 |
PANASONIC CORPORATION |
发明人 |
TSUSHIMA MINEO;TAKAGI YOSHIAKI;ONO KOJIRO;TANAKA NAOYA;MIYASAKA SHUJI |
分类号 |
G10L19/00 |
主分类号 |
G10L19/00 |
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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