Patent ID: 11922918
Assignee: FAURECIA CREO AB
Field: Other consumer goods (Other fields)
Classification: CPC G | IPC G

Claim 12:
13. The method as claimed in claim 1, wherein when the method comprises generating at least one additional reference signal, the method further comprises for the at least one subband, selecting the subset of the subband reference signals, comprising steps in a following order:
1) calculating a coherence value representing a coherence level at a frequency range of the at least one subband, between each of the subband reference signals and an output signal, wherein the output signal is one of: the error signal(s) and a signal representing a sound measured at a second position;
2) among the subband reference signals, selecting a subband reference signal having a largest coherence value;
3) creating a remaining group of the subband reference signals, wherein the remaining group of the subband reference signals consists all the subband reference signals except the previously selected subband reference signal(s);
4) for each subband reference signal of the remaining group of subband reference signals, generating a conditioned subband reference signal, by conditioning the subband reference signal;
5) for each conditioned subband reference signal, calculating a partial coherence value representing a coherence level at the frequency range of the at least one subband, between the conditioned subband reference signal and the output signal; and
6) among the remaining group of reference signals, selecting a subband reference signal corresponding to a conditioned subband reference signal having a largest partial coherence value.