Method and system for noise measurement with combinable subroutines for the mesurement, identificaiton and removal of sinusoidal interference signals in a noise signal

摘要

A method combines, within a system for noise measurement, subroutines for the measurement, identification and removal of sinusoidal interference signals (A_k.e^{j(omegakt+phik)}, A_k.e^{j(mu.omegakDeltat+phik)}) in a noise signal (w(t), w(nu.Deltat)). In this context, the procedural stage (S 10 , S 110 , S 220 ) of splitting the frequency range (nu) to be measured into several frequency bands (nu) via an FFT filter bank ( 1 ) and the procedural stage (S 20 , S 120 , S 230 ) of determining autocorrelation matrices (R_nu) respectively associated with the frequency bands (nu) are implemented jointly for the respectively selected subroutines of measurement, identification and removal of sinusoidal interference signals (A_k.e^{j(omegakt+phik)}, A_k.e^{j(mu.omegakDeltat+phik)}) in a noise signal (w(t), w(nu.Deltat)). The parameters of the autocorrelation matrices (R_nu) are adjusted in a variable manner dependent upon the respectively selected subroutine(s) and upon the required result quality.