System and method for diagnostic modeling of audio and video quality of service

摘要

Systems and methods are described for determining a set of three quality metrics for audio and/or video signals transmitted through a packet network. The set of three metrics provide more insight into which factors are affecting the quality of the received signal as perceived by the end-user. These three quality metrics measure reductions in quality due to lossy media transmission, packet loss concealment from packet loss and/or packet/frame jitter, and long periods of silence and/or frozen video. Because each metric quantifies a different aspect of transmitted quality, a deficiency in the transmitted signal can be identified by reference to the set.

主权项

1. A method for determining an objective quality model for quantifying quality of a received signal, the method comprising:
receiving at least one of a transmitted audio signal or a transmitted video signal; determining a set of diagnostic quality metrics quantifying quality aspects of the received signal, comprising:
determining a first diagnostic quality metric for measuring a reduction in signal quality due to lossy media transmission;determining a second diagnostic quality metric for measuring a reduction in signal quality due to packet loss concealment;determining a third diagnostic quality metric for measuring a reduction in signal quality due to playout buffer underflow; andwherein the first metric, the second metric, and the third metric are all different and are all provided in the set.