发明名称 Determining the effects of new types of impairments on perceived quality of a voice service
摘要 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.
申请公布号 US2006126529(A1) 申请公布日期 2006.06.15
申请号 US20050102686 申请日期 2005.04.11
申请人 MCI, INC. 发明人 HARDY WILLIAM C.
分类号 H04L12/66;H04L12/26 主分类号 H04L12/66
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