Patent ID: 7075981
Filing Date: 2006-07-11
Classification: H04B,H04L,H04W

Abstract:
1. A method for automatically estimating the subjective quality of a signal carried over a transmission path and presented at a user interface comprising the steps of: (a) at periodic intervals monitoring the transmission path used to carry said signal and at each of said monitoring intervals; (b) determining the value of at least one impairment factor, creating a set of values for said impairment factor, and for each set of values for said impairment factor so obtained estimating an effect of said impairment factor on a subjective or perceptual quality of said signal to create an estimated effect; (c) determining an estimated subjective quality of said signal by using the estimated effects of said impairment factor; and (d) reducing a value of a counter if said estimated subjective quality is below the value of said counter or increasing the value of said counter if said estimated subjective quality is above the value of said counter.