Method of embedding digital information into audio signal machine-readable storage medium and communication terminal
US8972246B2 · kind B2 · utility
2Cited by
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10Claims
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Key dates
| Filing date | Dec 6, 2012 |
| Grant date | Mar 3, 2015 |
| Priority date | — |
| Expiry date | Nov 4, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/018
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for embedding digital information into an audio signal, is provided. The method includes dividing the digital information into low-priority data and high-priority data; dividing the audio signal into first and second signal parts; embedding at least one echo signal into the first signal part; embedding a communication signal modulated with low-priority data, which has a spectrum according to psychoacoustic analysis of the second signal part, into the second signal part; and combining the embedded first and second signal parts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.