Performance testing of echo cancellers using a white noise test signal
US8731184B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 15, 2012 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | May 22, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B3/493
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Test equipment including a signal generator and a method of generating a test signal associated with an overall frequency band are disclosed. Also disclosed is a method of using the test signal to test an echo canceller. The method of generating the test signal includes generating a first time segment associated with a first frequency sub-band of the overall frequency band and generating a second time segment associated with a second frequency sub-band of the overall frequency band. The second frequency sub-band is higher than the first frequency sub-band. The method further includes generating a time gap segment separating the first time segment and the second time segment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.