Popular song key segment pick-up method for music listening |
Title： |
| Popular song key segment pick-up method for music listening |
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Application Number： |
200410009537 |
Application Date： |
2004/09/10 |
Announcement Date： |
2005/03/23 |
Pub. Date： |
2006/06/07 |
Publication Number： |
1598923 |
Announcement Number： |
1258752 |
Grant Date： |
2006-6-7 |
Granted Pub. Date： |
2006-6-7 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
G10L 11/00, G06F 17/00 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Zhou Jie, Zhang Yibin, Feng Shangping |
Key Words： |
Popular song, key segment, pick-up method, music listening |
Abstract： |
The method of extracting popular songs' key section is used in the music audition and belongs to the field of music signal analysis. It adopts the music signal of the WAV format with its sampling rate of 11025Hz and quantizing digit of 8 as the object, divides the music data stream into a series of frequency segments with fixed length, extracts the short time energy of every segment, groups the frequency segments in according to the time, counts the threshold value of the short time energy crossing the response curve, binarizates it, extracts the candidate key sections on the basis, puts the candidate key sections with appropriate length into the muster and finally chooses the highest average short time energy in the muster as the final popular songs' key section. Dealing with the 5-minute popular song in the Pentium IV 1,500M HZ CPU machine only needs 470 milliseconds. Except for the time of reading the data, the execution time only is 90 milliseconds, which realizes the aim to extract the key sections online and real time. |
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 Relevancy information |
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| Last Update |
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2008-4-17 |
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Selected patents owned by Tsinghua University filed in 2005 are loaded. |
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2008-3-31 |
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Selected patents owned by Tsinghua University filed in 2006 and 2007 are load. |
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