From: "Alex F" <alexf@iss.net>
Date: Tue, 30 Jul 1996 04:24:23 +0800
To: mpd@netcom.com (Mike Duvos)
Subject: Re: Digital Watermarks for copy protection in recent Billbo
Message-ID: <199607291702.NAA03342@phoenix.iss.net>
MIME-Version: 1.0
Content-Type: text/plain


> Jim Choate <ravage@einstein.ssz.com> writes:

> You want a continuous Fourier transform, not a discrete one, to
> determine the frequency spectrum of the waveform being sampled.
> The FFT is simply an algorithm for computing the DFT without
> redundant computation.  In general, any Lebesgue integrable
> complex function will have a Fourier transform, even one with a
> finite number of discontinuities. The reverse transform will
> faithfully reproduce the function, modulo the usual caveats about
> function spaces and sets of measure zero.
> 
Well of course!  My thoughts exactly.  Great minds think alike.

Now, would you mind doing a little translation (for the laymen), 
since I didn't understand?

I appreciate it,

Alex F
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Alex F    alexf@iss.net
Marketing Specialist
Internet Security Systems
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