Audio fingerprinting for advertisement detection
US9159328B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2014 |
| Grant date | Oct 13, 2015 |
| Priority date | — |
| Expiry date | May 7, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06Q30/0241
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A device may receive an audio sample, and may separate the audio sample into multiple sub-band signals in multiple frequency bands. The device may modify an upper boundary and a lower boundary of at least one of the frequency bands to form modified frequency bands. The device may modify the sub-band signals to form banded signals associated with the modified frequency bands. The device may smooth the banded signals to form smoothed signal values. The device may identify peak values included in the smoothed signal values, and may generate an audio fingerprint for the audio sample based on the smoothed signal values and the peak values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.