Methods and apparatus to perform audio watermarking and watermark detection and extraction
US8359205B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2009 |
| Grant date | Jan 22, 2013 |
| Priority date | — |
| Expiry date | Mar 27, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04H2201/50
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus to audio watermarking and watermark detection and extracted are described herein. An example method includes receiving a media content signal, sampling the media content signal to generate samples, storing the samples in a buffer, determining a first sequence of samples in the buffer, determining a second sequence of samples in the buffer, wherein the second sequence of samples is of substantially equal length as the first sequence of samples, calculating an average of the first sequence of samples and the second sequence of samples to generate an average sequence of samples, extracting an identifier from the average sequence of samples, and storing the identifier in a tangible memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.