A method for a respirator, ventilator, and storage medium

The invention relates to a method for a respirator. Here, a first polynomial to the time characteristic of a respiratory flow is adjusted. Furthermore, the invention relates to a method for a respirator, wherein the derivative of the respiratory flow is estimated after the time and a second polynomial is matched to the dissipation. Further, the invention relates to a ventilator, in particular a CPAP device, for carrying out this method and a storage medium containing such programs.