Apparatus and method for generating an audio fingerprint and using a two-stage query
US8886531B2 · kind B2 · utility
8Cited by
45References
21Claims
0Family size
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Key dates
| Filing date | Jan 13, 2010 |
| Grant date | Nov 11, 2014 |
| Priority date | — |
| Expiry date | Nov 2, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/783
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An audio fingerprint is generated by transforming an audio sample of a recording to a time-frequency domain and storing each time-frequency pair in a matrix array, detecting a plurality of local maxima for a predetermined number of time slices, selecting a predetermined number of largest-magnitude maxima from the plurality of local maxima detected by said detecting, and generating one or more hash values corresponding to the predetermined number of largest-magnitude maxima.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.