Time synchronization of human speech samples in quality assessment system for communications system
US6438373B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1999 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Feb 22, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L25/69
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A system and method are disclosed for determining a level of quality of a communications medium having an indeterminate delay. The communications medium communicatively couples a transmitting station and a receiving station. The transmitting station transmits over the communications medium a measurement sequence including a synchronization sequence followed by a measurement sample. The transmitted measurement sample has a predetermined beginning point, which is identified by the transmitted synchronization sequence. The receiving station receives over the communications medium the measurement sequence including the synchronization sequence followed by the measurement sample. The receiving station determines from the received synchronization sequence the beginning point of the received measurement sample. The transmitted measurement sample and the received measurement sample are then compared according to respective beginning points to determine the level of quality of the communications medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.