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On Studying the Impact of the Internet Delays on Audio Transmission
 

Summary: On Studying the Impact of the Internet Delays on
Audio Transmission
Lopamudra Roychoudhuri, Ehab Al-Shaer, Hazem Hamed and Gregory B. Brewster
Multimedia Networking Research Laboratory
School of Computer Science, Telecommunications and Information Systems
DePaul University, Chicago, IL., U.S.A.
{lroychou,ehab,hhamed,brewster}@cs.depaul.edu
Abstract-- The quality of the audio in IP telephony is
significantly influenced by various factors, such as type of
encoder, distance, delay variation, rate and distribution of packet
loss, type of error concealment, and others. Hence, the
performance of any IP telephony system is highly dependent on
understanding the contribution of these factors on audio quality,
and their impact on adaptive transport mechanisms such as
error and buffer control. We conducted a large-scale audio
transmission experiment over the Internet in a 12-month period
in order to evaluate the effects and the correlation of such
parameters on audio transmission over IP. As a part of studying
and analyzing the collected data, we have made a number of new
observations on the correlation of loss and RTT variation, and

  

Source: Al-Shaer, Ehab - School of Computer Science, Telecommunications and Information Systems, DePaul University

 

Collections: Computer Technologies and Information Sciences