Patent ID: 8412478

Claim:
A device for determining an error induced by a first-order high-pass filter in a signal, the device comprising: a processing device; and a means for calculating said error according to the formula: E ( t )= V e ( t )− V s ( t )=2·Π· F c ·∫ α=t 0 t ( V s (α)− V s (α)) ·dα+E ( t 0 ) with: E(t) the value of the error induced by the high-pass filter, as a function of the time variable t, Π the trigonometric constant, F c the cutoff frequency of the high-pass filter, t 0 the initial instant, α an integration variable, V e the signal input to the high-pass filter, V s the signal output by the high-pass filter, V s the mean value of the signal V s , wherein the processing device is configured to cause the means for calculating the error to calculate the error according to the formula.