Method and apparatus for synchronizing audio and video components of multimedia presentations by identifying beats in a music signal
US7301092B1 · kind B1 · utility
54Cited by
1References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2004 |
| Grant date | Nov 27, 2007 |
| Priority date | — |
| Expiry date | Mar 26, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H2210/076
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Methods and systems for detecting a fundamental beat frequency in a predetermined time interval of a music signal are disclosed. The frequency may be detected by processing a music signal with the discrete wavelet transform to obtain a set of coefficients. A subset of the coefficients may be processed to obtain a plurality of candidate beat frequencies contained in the corresponding portion of the music signal. Harmonic relationships between the candidate beat frequencies may be determined, and the fundamental beat frequency may then be determined based upon the determined harmonic relationships.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.