Provided is a process for analysing a dirty ECG tracing, the dirty tracing including a clean ECG tracing, emitted by a main source, and a noise signal emitted by at least one noise source, the method including at least one preliminary phase of breaking down the dirty ECG tracing in a clean ECG tracing and a noise signal by means of an ICA-type analysis, at least one first phase wherein the dirty ECG tracing is discretized for intervals of time in portions of electrical signal, at least one second phase, wherein at least one Gaussian parameter of the portions of electrical signal is evaluated, at least one third phase, wherein one of the portions of electrical signal is selected, in the same interval of time, on the basis of at least one Gaussian parameter and wherein the portion of electrical signal selected is the first portion.
