Audio perceptual hash retrieval method and device based on non-negative matrix factorization and medium equipment
The invention discloses an audio perceptual hash retrieval method and device based on non-negative matrix factorization, a storage medium and equipment, and belongs to the technical field of short-distance wireless communication, the method comprises the following steps: executing partial decoding o...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses an audio perceptual hash retrieval method and device based on non-negative matrix factorization, a storage medium and equipment, and belongs to the technical field of short-distance wireless communication, the method comprises the following steps: executing partial decoding on a section of LC3 audio code stream to obtain a spectral coefficient of each frame of LC3 audio code stream; according to the spectral coefficient of each frame of LC3 audio code stream, obtaining a perception feature of each frame of LC3 audio code stream; performing non-negative matrix factorization on the sensing features to obtain an activation matrix and a coding matrix; generating a perceptual hash sequence of the LC3 audio code stream according to the activation matrix; and comparing the perceptual hash sequence with a hash sequence in a pre-stored hash database, and judging whether the target audio is retrieved or not. According to the method, in a compressed domain, the LC3 audio code stream is partially |
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