Arrangement for filtering compressed pulse-code- modulated...

Details Arrangement for filtering compressed pulse-code- modulated... Arrangement for filtering compressed pulse-code- modulated...

H - Electricity

03

H

328/0.3

H03H 17/06 (2006.01)

Patent

CA 1122283

8.8.1978 1 PHN 9012 ABSTRACT : Arrangement for filtering compressed pulse-code-modulated signals. Digital filter for filtering non- uniformly quantised pulse code-modulated signals formed by a sequence of code words each comprising a segment number s(i) and a mantissa number m(i). This digital filter com- prises a modifying device to which the mantissa numbers m(i) are applied for generating modified mantissa numbers E(i). The numbers E(i) are each multiplied by the magnitude of a filter coefficient, for generating first product numbers z1(i). Thereafter those numbers z1(i) are each multiplied by a number 2B(i), B(i) being either equal to s(i) or equal to s(i)-1, so that second product numbers z2(i) are obtained which are applied to an accumulator.

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