Characterization of impaired intervals in a voice over packet session using audio frame loss concealment
US7433358B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2005 |
| Grant date | Oct 7, 2008 |
| Priority date | — |
| Expiry date | Dec 23, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M7/006
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An embodiment may include an apparatus comprising a dejitter buffer to receive packets containing audio data, a codec coupled with the dejitter buffer, the codec to receive coded audio frames from the dejitter buffer and decode them, and a concealed seconds meter coupled with the dejitter buffer, the concealed seconds meter to record concealment events by the decoder to provide an objective measure of media impairment. Another exemplary embodiment may be a method comprising receiving packets containing audio information at a dejitter buffer, decomposing the packets to coded audio frames, sending the coded audio frames to a decoder and decoding the frames, generating a concealment output stream if the decoder does not receive a valid frame from the dejitter buffer, and recording concealment events to provide an objective measure of media impairment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.