DIGITAL SOURCE OF PERIODIC SIGNALS

摘要

A generator according to the invention comprises essentially a numerical table in which values of the signal over a period are stored; consulting of the table is effected along a step k; the frequency of the signal to be generated, the frequency of consultation F and the number N of values of the signal in the period are related to k by the equation: k = Nf/F (k=N/2). If the signal is sinusoidal, the table can contain N/4 values, namely from 0 to pi /2, and an address selector enables the sign of each quarter period of the signal to be taken into consideration.