发明名称 |
Method and apparatus for classifying signals, method and apparatus for generating descriptors and method and apparatus for retrieving signals |
摘要 |
The input signal can be quickly and accurately classified and a descriptor can be generated according to the result of classification. Then, the input signal can be retrieved on the basis of the result of classification or the descriptor. A signal processing apparatus comprises a time block splitting section 3 for splitting an audio signal into blocks that are typically 1 second long, a feature extracting section 4 for extracting a characteristic quantity of 18 degrees on the signal attribute from the audio signal in each block and a vector quantizing section 5 for carrying out an operation of categorical classification for the audio signal of each block by means of a vector quantization technique that uses a VQ code book 8 and a characteristic vector formed from the characteristic quantity of 18 degrees. The vector quantizing section 5 outputs a classification label obtained as a result of the categorical classification and a descriptor indicating the reliability of the label. If a signal retrieving operation is conducted in the downstream, the result of the classification or the descriptor is used for the signal retrieval.
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申请公布号 |
US2006140413(A1) |
申请公布日期 |
2006.06.29 |
申请号 |
US20050287970 |
申请日期 |
2005.11.28 |
申请人 |
SONY CORPORATION |
发明人 |
ABE MOTOSUGU;NISHIGUCHI MASAYUKI |
分类号 |
G10L15/10;H03G3/00;G10L15/02;G10L17/00;G10L21/00;G10L21/04;H04R29/00 |
主分类号 |
G10L15/10 |
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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