Method and device for noise detection
US7519347B2 · kind B2 · utility
8Cited by
5References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 20, 2006 |
| Grant date | Apr 14, 2009 |
| Priority date | — |
| Expiry date | Aug 24, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2021/02085
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method for detecting cell phone noise induced in telecommunication equipment, especially in microphones and other unshielded electronic units connected to a communication terminal. A noise detector is configured to execute a so-called “cepstrum” transform of a captured signal exposed to cell phone noise. Due to the characteristics of cell phone radio signals using TDMA, cell phone induced can then easily be detected from the cepstrum transform as peaks at known samples, and noise elimination or attenuation may then be executed on the captured signal when cell phone noise is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.