TY - GEN
T1 - Multi-stream voice over IP using packet path diversity
AU - Liang, Yi J.
AU - Steinbach, Eckehard G.
AU - Girod, Bernd
PY - 2001
Y1 - 2001
N2 - We propose multi-stream transmission of real-time voice over best-effort packet networks such as today's Internet, where multiple redundant descriptions of the voice stream are sent over independent network paths. At the receiver, multi-stream adaptive playout scheduling is employed to improve the tradeoff among delay, late loss rate, and speech quality. Experiments over the Internet suggest largely uncorrelated statistical characteristics, such as erasure probability and delay jitter, for different network paths, which leads to a noticeable path diversity gain. We have obtained significant reductions in mean end-to-end latency and loss rates compared to FEC protected single-path transmission at the same data rate. The speech quality perceived by the receiver is evaluated using the recently standardized objective quality measure PESQ. In our experiments, we observe gains of more than 0.4 PESQ score for voice transmission with packet path diversity.
AB - We propose multi-stream transmission of real-time voice over best-effort packet networks such as today's Internet, where multiple redundant descriptions of the voice stream are sent over independent network paths. At the receiver, multi-stream adaptive playout scheduling is employed to improve the tradeoff among delay, late loss rate, and speech quality. Experiments over the Internet suggest largely uncorrelated statistical characteristics, such as erasure probability and delay jitter, for different network paths, which leads to a noticeable path diversity gain. We have obtained significant reductions in mean end-to-end latency and loss rates compared to FEC protected single-path transmission at the same data rate. The speech quality perceived by the receiver is evaluated using the recently standardized objective quality measure PESQ. In our experiments, we observe gains of more than 0.4 PESQ score for voice transmission with packet path diversity.
UR - http://www.scopus.com/inward/record.url?scp=0035791709&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0035791709
SN - 0780370252
T3 - 2001 IEEE Fourth Workshop on Multimedia Signal Processing
SP - 555
EP - 560
BT - 2001 IEEE Fourth Workshop on Multimedia Signal Processing
A2 - Dugelay, J.-L.
A2 - Rose, K.
A2 - Dugelay, J.-L.
A2 - Rose, K.
T2 - 2001 IEEE fourth Workshop on Multimedia Signal Processing
Y2 - 3 October 2001 through 5 October 2001
ER -