Methods and apparatus for temporal alignment of media
US8205148B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 7, 2009 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Oct 30, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B27/034
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for synchronizing media clips uses audio data of the media clips. The method estimates a global offset between two media clips. The global offset may be determined in a wide variety of ways. The method selects a first test region of the audio track of the first media clip and uses the global offset to identify a corresponding second test region in the audio track of the second media clip. The first and second test regions are compared, for example by cross-correlation, to determine a local offset. In some embodiments a plurality of local offsets are determined for different parts of the media clips. A computer system may perform the method to automatically synchronize media clips.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.