Application of a non-secure warning tone to a packetised voice signal
US9497233B2 · kind B2 · utility
0Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 15, 2012 |
| Grant date | Nov 15, 2016 |
| Priority date | — |
| Expiry date | May 27, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M7/0078
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method is disclosed of applying a non-secure warning tone to a packetized voice signal which includes receiving a voice signal containing a sequence of voice samples; providing a non-secure warning tone signal containing a plurality of tone samples; and modifying the voice signal by selectively including tone samples in the sequence of voice samples.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.