Creating spectral wells for inserting watermarks in audio signals
US9454343B1 · kind B1 · utility
1Cited by
30References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 20, 2015 |
| Grant date | Sep 27, 2016 |
| Priority date | — |
| Expiry date | Jul 20, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N21/8358
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for a machine or group of machines to watermark an audio signal may include receiving the audio signal, receiving a watermark signal, creating a spectral well on the audio signal by removing a portion of the audio signal corresponding to a frequency range, and inserting the watermark signal in the spectral well.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.