Institute for Telecommunication Sciences
the research laboratory of the National Telecommunications and Information Administration

Mark A. McFarland; Margaret H. Pinson; Carolyn Ford; Arthur A. Webster; William J. Ingram; Scott Haines; Kelsey Anderson

Abstract: NTIA/ITS has conducted a series of studies to quantify the effects that individual audio and video qualities have on the overall Mean Opinion Score (MOS) for a given set of audiovisual clips. The experiment described in this report studies the effects that the synthesis of audio and video quality has on a subject's overall MOS. The overall MOS for this set of audiovisual clips can be predicted rather well from the video MOS alone. This appears to be a consequence of the wide quality range spanned by the video impairments, in combination with the narrow quality range spanned by the audio impairments. This result will not necessarily be valid for other choices of audiovisual material.

Keywords: video quality; subjective testing; audio quality multimedia quality


To request a reprint of this report, contact:

Lilli Segre, Publications Officer
Institute for Telecommunication Sciences
(303) 497-3572
LSegre@ntia.gov

For technical information concerning this report, contact:

Mark A. McFarland
Institute for Telecommunication Sciences
(303) 497-4132
mmcfarland@ntia.doc.gov


Disclaimer: Certain commercial equipment, components, and software may be identified in this report to specify adequately the technical aspects of the reported results. In no case does such identification imply recommendation or endorsement by the National Telecommunications and Information Administration, nor does it imply that the equipment or software identified is necessarily the best available for the particular application or uses.

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