Voice interference correction for mixed voice and spread spectrum data signaling
US8126029B2 · kind B2 · utility
2Cited by
146References
23Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 8, 2005 |
| Grant date | Feb 28, 2012 |
| Priority date | — |
| Expiry date | Nov 20, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M11/066
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method, a process and an audio system for embedding bit stream in a voice signal is disclosed. A voice/data interference signal is composed and supplied to the mixer of the voice signal and the data signal such that the resulting mixed signal effectively cancels the interference and allows the interference-free signal being transmitted to the audio signal receiver/decoder. The decoder may decode the data without interference errors. A method using profile shaping to mask the noise due to modulated carrier signal is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.