| 摘要 |
PROBLEM TO BE SOLVED: To easily and quickly extract a characteristic of a data. SOLUTION: A time-pitch analyzing section 81 chronologically continuously analyzes sound data which chronologically continue in each of predetermined-frequency bands, based on algorithm constructed by a GP or a GA. A continuous music characteristic quantity extracting section 82 extracts a continuous characteristic quantity which is a characteristic quantity which chronologically continues from the analysis result. A frame cutting section 83 cuts the continuous characteristic quantity into period regions each of which has a predetermined length. A regional characteristic quantity extracting section 84 extracts a regional characteristic quantity which is a characteristic quantity represented by one scalar or vector of each period, for each period from each of the regions into which the continuous characteristic quantity has been cut. A music/conversation discrimination section 85 estimates a target characteristic quantity which is a characteristic quantity which represents one characteristic of the sound data in the total period from each of the regional characteristic quantities for each period. The invention is applicable to a recording and playback device which records and plays back sound data. COPYRIGHT: (C)2009,JPO&INPIT
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