corresponding to the waveform component based on the determined phase values, otherwise, discarding the phase values as being unreliable. 10. The device according to claim 9, wherein the signal processing means are further configured to perform the method in accordance to any of claims 2 to 8. 11. A computer program comprising computer readable code means, which when run on a computer, causes the computer to carry out the method according to any of claims 1to 8. 12. A computer program product comprising a computer-readable medium on which the computer program according to claim 11 is stored.