22 November 1999 Speech quality as a function of IP network performance
Author Affiliations +
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
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.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Gregory W. Cermak, Gregory W. Cermak, } "Speech quality as a function of IP network performance", Proc. SPIE 3845, Multimedia Systems and Applications II, (22 November 1999); doi: 10.1117/12.371192; https://doi.org/10.1117/12.371192

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