发明名称 |
COMPLEXITY SCALABLE PERCEPTUAL TEMPO ESTIMATION |
摘要 |
The present document relates to methods and systems for estimating the tempo of a media signal, such as audio or combined video/audio signal. In particular, the document relates to the estimation of tempo perceived by human listeners, as well as to methods and systems for tempo estimation at scalable computational complexity. A method and system for extracting tempo information of an audio signal from an encoded bit-stream of the audio signal comprising spectral band replication data is described. The method comprises the steps of determining a payload quantity associated with the amount of spectral band replication data comprised in the encoded bit-stream for a time interval of the audio signal; repeating the determining step for successive time intervals of the encoded bit- stream of the audio signal, thereby determining a sequence of payload quantities; identifying a periodicity in the sequence of payload quantities; and extracting tempo information of the audio signal from the identified periodicity. |
申请公布号 |
WO2011051279(A1) |
申请公布日期 |
2011.05.05 |
申请号 |
WO2010EP66151 |
申请日期 |
2010.10.26 |
申请人 |
DOLBY INTERNATIONAL AB;BISWAS, ARIJIT;HOLLOSI, DANILO;SCHUG, MICHAEL |
发明人 |
BISWAS, ARIJIT;HOLLOSI, DANILO;SCHUG, MICHAEL |
分类号 |
G10H1/40 |
主分类号 |
G10H1/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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