| 摘要 |
<p>8.8.1978 1 PHN 9012 : Arrangement for filtering compressed pulse-code-modulated signals. Digital filter for filtering nonuniformly 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 comprises 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.</p> |
