METHOD AND DEVICE FOR DETERMINING THE QUALITY OF A SIGNAL

摘要

According to an objective measurement technique for determining the quality of an output signal (X(t)) of an audio or voice signals-processing and/or -transporting system, the output signal and a reference signal (Y(t)) are mapped on representation signals (R(X), R(Y)) of a suitably chosen perception model. A differential signal (D(t)) of the representation signals is averaged, in a time-averaging device (17), in two steps by two averaging members (31, 32) connected in series, over time, whereby a quality signal Q is generated. The time averaging is carried out by the first and second averaging members at the local and the global levels, respectively, using various averaging functions, e.g., preferably Lebesgue p-averaging functions having various p-values p1 > p2. Advantage: a high correlation between a generated quality signal Q and the human quality perception, even in the event of brief disturbances.