Presentation 2002/9/13
A Search Algorithm for Back Ground Music Signals Based on the Search for Numerous Small Area Signals
Hidehisa NAGANO, Kunio KASHINO, Hiroshi MURASE,
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Abstract(in English) This paper proposes a search method for music signals used as back ground music (BGM) in a long audio signal (stored signal). In such a search, a music signal is given as a reference signal and every segment including that music signal as BGM must be detected from the stored signal. The segments, even when they include the reference signal, differ considerably from the reference signal due to the presence of other audio signals such as voices. Therefore, it is difficult to detect segments that include the reference signal by direct matching of the reference signal and the stored signal. To solve this problem, we first chose small area spectra decomposed from the spectrum of the reference signal, and we search for similar segments for each decomposed spectrum in the stored signal. Then, we integrate the local similarities of detected small segments and find the segments including the reference signal. Searching for only the small segment with larger local similarity than the threshold greatly accelerates the search. In the experiments, a 15-second reference signal was detected from the stored signal in about 8 seconds by utilizing Time Series Active Search as the searching process for small area spectra.
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Keyword(in English) audio retrieval / back ground music retrieval / mixture audio signal / matching of divided audio signals
Paper # WIT2002-29
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Committee WIT
Conference Date 2002/9/13(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A Search Algorithm for Back Ground Music Signals Based on the Search for Numerous Small Area Signals
Sub Title (in English)
Keyword(1) audio retrieval
Keyword(2) back ground music retrieval
Keyword(3) mixture audio signal
Keyword(4) matching of divided audio signals
1st Author's Name Hidehisa NAGANO
1st Author's Affiliation NTT Communication Science Laboratories, NTT corporation()
2nd Author's Name Kunio KASHINO
2nd Author's Affiliation NTT Communication Science Laboratories, NTT corporation
3rd Author's Name Hiroshi MURASE
3rd Author's Affiliation NTT Communication Science Laboratories, NTT corporation
Date 2002/9/13
Paper # WIT2002-29
Volume (vol) vol.102
Number (no) 320
Page pp.pp.-
#Pages 5
Date of Issue