Method and device for determining the quality of a signal

Details Method and device for determining the quality of a signal Method and device for determining the quality of a signal

2006-03-21

2006-03-21

Hoff, Marc S. (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system

Measured signal processing

C702S069000, C702S081000, C702S182000, C702S199000, C704S200100

Reexamination Certificate

active

07016814

ABSTRACT:
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, in two steps by two averaging members 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 paveraging functions having various p-values p1>p2. The invention advantageously provides a high correlation between a generated quality signal Q and the human quality perception, even in the event of brief disturbances.

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