A method is provided for generating a digital signal (DS) from an analog signal (IA, UA) generated by a frequency converter on the basis of pulse width modulation, wherein the digital signal corresponds to a mean value of the analog signal over a period of the pulse width modulation. The method includes the acts of: generating a bit stream (BS(i)) with a predetermined bit repetition duration (BW) depending on the analog signal by way of a sigma-delta modulator (1) and, during a time interval which has a duration which is at least as great as the period of the pulse width modulation: multiplying a respective bit (BS(i)) of the bit stream by a corresponding rating coefficient (BK(i)) for generating a respective bit/rating coefficient product and summing the respective bit/rating coefficient products, wherein the sum represents the digital signal.