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Techniques of audio feature extraction and related processing apparatus, method, and program
Techniques of audio feature extraction and related processing apparatus, method, and program
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机译:音频特征提取技术及相关处理装置,方法和程序
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摘要
A music signal processing apparatus includes a frequency spectrum transform unit, a filter, a frequency feature amount generation unit, and a melody feature amount sequence acquisition unit. The frequency spectrum transform unit is configured to transform a music signal into a frequency spectrum, the music signal being a signal of a musical piece containing a part with a melody. The filter is configured to remove a steep peak of the frequency spectrum. The frequency feature amount generation unit is configured to generate, from a signal output from the filter, a frequency feature amount in which a fundamental frequency component of the part is emphasized. The melody feature amount sequence acquisition unit is configured to acquire, based on the frequency feature amount, a melody feature amount sequence that specifies a fundamental frequency of the part at each time.
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