Method and test signal for measuring speech intelligibility
US8731907B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 20, 2005 |
| Grant date | May 20, 2014 |
| Priority date | — |
| Expiry date | Apr 12, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2021/02082
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for estimating speech intelligibility in a mobile communications network component handling two-way communication between two ends of a signal path. Test signals adapted for speech intelligibility measurements are inserted into the signal path to simulate two-way communication. Double-talk is detected during the communication, and speech intelligibility measurements are performed only during periods of double-talk. This enables the effect of echo to be taken into account while avoiding undesirable effects from non-linear processing, and comfort noise if present, in the signal path. Voice enhancement devices may then be adjusted in response to the estimated speech intelligibility.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.