steckner@lri.uwo.ca (Michael Steckner) (09/28/90)
Is there anyone who can help me compute a discrete Hilbert Transform? I understand that I multiply all positive frequency components by +i and all negative components by -i, but what about the DC frequency bin? Also, does the input function need to be in the real domain, or can the input be a complex function. Thanks
nhanke@iiic.ethz.ch (Norbert Hanke) (10/01/90)
In time domain the Hilbert Transform performs a 90 degree phase shift. Look at the DC bin as a cosine with zero frequency: phase shifted it will be a sine with zero frequency, so the DC bin will disapear. You may use the Hilbert Transform for a complex time function if this makes sense to you... Norbert Hanke ETH Zurich