Circuit and method for digitally measuring signal levels of PCM

Electricity: measuring and testing – Measuring – testing – or sensing electricity – per se – Frequency of cyclic current or voltage

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324 76A, H04J 314

Patent

active

041031083

ABSTRACT:
A digital circuit for the level measurement of PCM signals representing an analogue signal and encoded in accordance with a predetermined companding law comprising a selector circuit having position 0-n for selecting integers between 0 - n; a sampling circuit for successively sampling the input PCM signal 2.sup.n times, n being determined by the selector circuit; a connector circuit for converting each of the samples to its normalized power representation and for computing the average power of the samples; and means for determining the signal level equivalent of said average power in a conventional representation of power levels.

REFERENCES:
patent: 3683115 (1972-08-01), Schellenberg
patent: 3798635 (1974-03-01), Candiani
patent: 3823269 (1974-07-01), Saito

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