REPORT Korchagin_Idiap-RR-39-2009/IDIAP Automatic Temporal Alignment of AV Data Korchagin, Danil Garner, Philip N. Dines, John audio processing temporal alignment time-frequency analysis EXTERNAL http://publications.idiap.ch/attachments/reports/2009/Korchagin_Idiap-RR-39-2009.pdf PUBLIC Idiap-RR-39-2009 2009 Idiap December 2009 In this paper, we describe the automatic audio-based temporal alignment of audio-visual data, recorded by different cameras, camcorders or mobile phones during social events like high school concerts. All recorded data is temporally aligned with a common master track, recorded by a reference camera. The core of the algorithm is based on perceptual time-frequency analysis with a precision of 10 ms. The results show correct alignment in 99% of cases for a real life dataset.