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From: nhanke@iiic.ethz.ch (Norbert Hanke)
Newsgroups: comp.dsp
Subject: Re: Hilbert Transforms
Message-ID: <9846@neptune.inf.ethz.ch>
Date: 1 Oct 90 12:04:17 GMT
References: <9009272306.AA06023@lri.uwo.ca>
Sender: news@neptune.inf.ethz.ch
Organization: ETH Zurich
Lines: 8

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