I&m is currenffymuch discussion of Quality of service (Qos) measurements at the network IeveIof real-time mdimedia serviq but it is theszd.jectie @typerwivedbytie-r that will determine whether these applications are adopteil This paperangues that ITU-recommended metiodsfor subjective quality msessment of _ and video arenotsuitalie for asssing the qua?ityof many newer services and applications. We present an outline of what we beiieve to be a more suitabIe testingmethodoIogy, vddchacknowkdges tie muklimensional mture of perceived audio and video qwdity.
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Watson et al. (1998) studied this question.