Record Details

Adaptive delay estimation for low jitter audio over Internet

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title Adaptive delay estimation for low jitter audio over Internet
 
Creator KANSAL, AMAN
KARANDIKAR, ABHAY
 
Subject signal receivers
adaptive estimation
buffer storage
delay estimation
jitter
 
Description Real time voice applications typically produce uniformly spaced voice packets and faithful reconstruction demands that these be played out at the same intervals. Best effort packet networks, however, produce variable delays on different packets and the receiver is required to buffer the received packets before playout. Excessive buffering delays deteriorate the system performance for interactive audio and so intelligent algorithms that keep this delay minimum while maintaining an acceptable packet loss have to be employed. In this research, we develop a new "α-adaptive" algorithm which offers considerable reduction in delays compared to existing algorithms, especially for low packet losses. A generic jitter control procedure is also proposed which may be used with any buffering algorithm to enhance its jitter performance without significantly affecting the delay loss tradeoff. Further, an existing algorithm based on Normalized Least Mean Squares filter is discussed and modifications are proposed for its practical implementation. All suggestions are supported by simulations on Internet delay traces.
 
Publisher IEEE
 
Date 2008-12-22T05:39:54Z
2011-11-27T21:26:38Z
2011-12-15T09:56:19Z
2008-12-22T05:39:54Z
2011-11-27T21:26:38Z
2011-12-15T09:56:19Z
2001
 
Type Article
 
Identifier Proceedings of the IEEE Global Telecommunications Conference (V 4), San Antonio, USA, 25-29 November 2001, 2591-2595
0-7803-7206-9
10.1109/GLOCOM.2001.966244
http://hdl.handle.net/10054/434
http://dspace.library.iitb.ac.in/xmlui/handle/10054/434
 
Language en