Quality assessment tool

Details Quality assessment tool Quality assessment tool

2004-01-15

2010-02-02

West, Jeffrey R (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Electrical signal parameter measurement system

C702S066000, C702S079000, C702S081000, C702S084000, C702S179000, C704S200000, C370S516000

Reexamination Certificate

active

07657388

ABSTRACT:
Non-intrusive speech quality assessment method and apparatus for storing a sequence of intercepted packets associated with a call, each packet containing speech data, and an indication of a transmission time of the packet; storing with each intercepted packet an indication of an intercept time of the packet; extracting a set of parameters from the sequence of packets; and generating an estimated mean opinion score in dependence upon the set of parameters. The extracting step comprises the sub steps of: generating a jitter parameter for each packet of the sequence of stored packets; generating a long term average jitter parameter for the stored packet; and generating a differential jitter parameter in dependence upon the jitter parameter for the stored packet and the long term average jitter parameter.

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