Loss concealment

There are various techniques for loss concealment (i.e., hiding losses), such as those used in the Robust Audio Tool (RAT):

Vicky J. Hardman, Martina Angela Sasse, Anna Watson, and Mark Handley, “Reliable Audio for use over the Internet”, in Proceedings or INET95, Honolulu, Hawaii, Sept. 1995. [Hardman 1995]

Vicky Hardman, Martina Angela Sasse, and I. Kouvelas, Successful Multiparty Audio Communication over the Internet”, Communications of the ACM, Vol. 41, No. 5, May 1998.[Hardman 1998]

UCL’s Robust Audio Tool (RAT), was SUMOVER now AccessGrid Video and Audio Tools Support (AVATS) Project UCL Media tools https://github.com/uclmediatools Links to an external site.

Slide Notes

[Hardman 1995] Vicky J. Hardman, Martina Angela Sasse, Anna Watson, and Mark Handley, ‘Reliable Audio for use over the Internet’, in Proceedings of INET95, Honolulu, Hawaii, 1995 [Online]. Available: https://csperkins.org/research/rat/publications/inet95-rat.pdf

[Hardman 1998] Vicky Hardman, Martina Angela Sasse, and Isidor Kouvelas, ‘Successful multiparty audio communication over the Internet’, Communications of the ACM, vol. 41, no. 5, pp. 74–80, May 1998. DOI: 10.1145/274946.274959

[Jiang 2000] Wenyu Jiang and Henning Schulzrinne, ‘Modeling of Packet Loss and Delay and Their Effect on Real-Time Multimedia Service Quality’, presented at the The 10th International Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV), Chapel Hill, North Carolina, USA, 2000 [Online]. Available: http://www.nossdav.org/2000/abstracts/27.html Links to an external site. http://citeseer.nj.nec.com/jiang00modeling.html Links to an external site.

[Jiang 2002] Wenyu Jiang and Henning Schulzrinne, ‘Comparison and Optimization of Packet Loss Repair Methods on VoIP Perceived Quality under Bursty Loss’, presented at the The 12th International Workshop on Network and Operating System Support for Digital Audio and Video (NOSSDAV), Miami Beach, FL, USA, 2002, pp. 73–81. DOI: 10.1145/507670.507681

Transcript

[slide89] Now, Vicky Hardman, together with Martina Angela Sasse and others, did a whole set of tools, whose specialty was how do you hide these errors. And they were called RAT, University College London Robust Audio Tool. And Martina was a visitor here about 20 years ago, around the time this was actually happening. And the cool thing was, the first term I was here at KTH, we actually had streaming video from the classroom for the teleinformatics course, between here in Kista and the campus of Valhallavägen, and another place. And we were able to have a shared electronic whiteboard, video, audio, all of that, already running 25 years ago. This is old technology. Today we still don't regularly have that technology in use, which is unfortunate. But hopefully we'll change that.