Title:
信号分類方法及び装置、記述子生成方法及び装置、信号検索方法及び装置
Document Type and Number:
Japanese Patent JP4438144
Kind Code:
B2
Abstract:
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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Inventors:
Abe Mitsugu
Masayuki Nishiguchi
Masayuki Nishiguchi
Application Number:
JP32136399A
Publication Date:
March 24, 2010
Filing Date:
November 11, 1999
Export Citation:
Assignee:
ソニー株式会社
International Classes:
G10L15/10; G10L15/02; G10L17/26; G10L25/00; G10L25/48; G10L25/54; G10L25/81
Domestic Patent References:
| JP8179791A | ||||
| JP10187182A | ||||
| JP10274991A | ||||
| JP10247093A | ||||
| JP8153118A | ||||
| JP8265660A | ||||
| JP8063186A |
Attorney, Agent or Firm:
Akira Koike
Eiichi Tamura
Seiji Iga
Eiichi Tamura
Seiji Iga