Methods and apparatus for generating signatures
US9136965B2 · kind B2 · utility
6Cited by
90References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 2013 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | Mar 11, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H2201/90
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for characterizing media are described. An example method includes converting at least a portion of a block of audio into a frequency domain representation, dividing the frequency domain representation into bands, determining a characteristic difference of a first band of the bands, and determining a signature bit based on the characteristic difference, wherein determining the signature bit is performed differently based on whether an index of the first band has a first property.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.