Process and system for the analog-to-digital conversion of signals

Process for analog-digital conversion of signals using at least two less highly resolving AD converters, characterized in that a analog signal on the one hand is fed unamplified to a first digital signal (x1) and, on the other hand, after signal processing, an error-ridden amplification greater than one, whose magnitude does not have to be exactly known, is converted to a second digital signal (x2), while in the case that

• a) the value of the second digital signal (x2) is in a range in which it was provoked by overloading, determined by exceeding a first threshold (s1) on the amount of the first digital signal (x1) (ABS(x1)>s1) the digital output signal (y) results from the first digital signal (x1) (y=x1), and that, in the other case,
• b) the digital output signal (y) is obtained by multiplying the second digital signal (x2) by the current inverse difference-amplification (a) (y=a*x2), and furthermore that in this case the current inverse difference-amplification is actualized by recursive computation with momentary values of the first and the second digital signal (x1), (x2), realizing that recursive computation starts with a fixed value.