Determining the effects of new types of impairments on perceived quality of a voice service
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United States of America Patent
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Aug 29, 2006
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app pub date -
May 30, 2001
filing date -
Dec 24, 1998
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Abstract
Empirically derived models are used to relate user perception to objectively measurable characteristics, under a criterion of nearly perfect co-variance between predicted MOS values and the variations in the values of the objectively measurable characteristics. In the example context of evaluating packet switched telephony service, the present invention eliminates the need to perform subjective tests to characterize each combination of codec type and transmission protocol.
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