Speech quality as a function of IP network performance

Gregory W. Cermak

doi:10.1117/12.371192

22 November 1999 Speech quality as a function of IP network performance

Gregory W. Cermak

Proceedings Volume 3845, Multimedia Systems and Applications II; (1999) https://doi.org/10.1117/12.371192
Event: Photonics East '99, 1999, Boston, MA, United States

Abstract

Subjective evaluations of IP telephony were collected while network performance was varied using an IP network emulator. Packet loss was set at 0%, 1%, or 8%. Mean one-way delay was set at 8 ms, 46 ms, or 156 ms (in addition to system delay of 90 ms). Delay variation (standard deviation) was set to 1 ms, 8 ms, or 17 ms. For combinations of these network settings, a standard mean opinion score (MOS) of speech quality was collected from 31 human judges. MOS is reported as a function of the network emulator settings.

Citation Download Citation

Gregory W. Cermak "Speech quality as a function of IP network performance", Proc. SPIE 3845, Multimedia Systems and Applications II, (22 November 1999); https://doi.org/10.1117/12.371192

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