Method, medium, and system for music retrieval using modulation spectrum

摘要

An audio information retrieval method, medium, and system that can rapidly retrieve audio information, even in noisy environments, by extracting a modulation spectrum that is robust against noise, converting features of the extracted modulation spectrum into hash bits, and using a hash table. The audio information retrieval method may include extracting a modulation spectrum from audio data of a compressed domain, converting the extracted modulation spectrum into fingerprint bits, arranging the fingerprint bits in a form of a hash table, converting a received query into an address by a hash function corresponding to the query, and retrieving the audio information by referring to the hash table.

主权项

1. An audio information storage method, comprising:
generating a Modified Discrete Cosine Transformation-Modulation Spectrum (MDCT-MS) fingerprint database from audio data in corresponding compressed domains; generating a hash table by dividing each MDCT-MS fingerprint in the MDCT-MS fingerprint database into segments; extracting an MDCT-MS fingerprint from an audio clip; dividing the extracted MDCT-MS fingerprint from the audio clip into segments and utilizing the audio clip segments as a hash value for referring to the MDCT-MS fingerprint database to retrieve a stored clip that matches the audio clip; and acquiring unreliable bits with respect to MDCT-MS fingerprints by ranking deviation values of neighboring frames a corresponding MDCT-MS.