PSQM - Computer Definition
A method, defined in ITU-T P.861, for objectively evaluating voice transmission quality. PSQM is an automated method developed to measure the perceived quality of real-time voice as impacted by compression codecs. PSQM compares a distorted voice sample to an original, clear voice sample and uses a complex analytical process to evaluate the difference in terms of factors that influence the perceptions of human listeners.The ultimate distortion score corresponds closely with the mean opinion score (MOS) yielded by the panel of human listeners employed using the P.800 method. See also codec, compression, MOS, P.800, and PSQM+.
An enhanced version of PSQM developed to measure the effects of packet loss and other network impairments on compressed real-time voice transmission. See also PSQM.