Methods and apparatus to identify media that has been pitch shifted, time shifted, and/or resampled
US11392640B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2019 |
| Grant date | Jul 19, 2022 |
| Priority date | — |
| Expiry date | Jan 21, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/54
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Methods, apparatus, systems and articles of manufacture are disclosed to identify media that has been pitch shifted, time shifted, and/or resampled. An example method includes: generating, by executing an instruction with a processor, a fingerprint from an audio signal; transmitting the fingerprint and adjusting instructions to a central facility to facilitate a query, the adjusting instructions identifying at least one of a pitch shift or a time shift; and receiving a response including an identifier for the audio signal and information corresponding to how the audio signal was adjusted; storing information indicative of the identifier and the information into a database.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.