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Re: Butterworth Band-Pass Filter [message #73910]

Sun, 12 December 2010 09:24

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

David Fanning writes:

> Oh, right. Good point. In the book I actually
> used a Gaussian high-pass filter, but it should
> have had the same problem. Humm. I'll have to
> look at that more closely. I certainly got
> nice looking output. I wonder why... :-(

Oh, with the Gaussian high-pass filter, the
DIST function is in the numerator, not the
denominator. That's why it worked.

I've GOT to clean up around here before my middle
son returns from Nepal, but maybe I'll have a chance
to work through an example later today.

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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[Message index]

		Re: Butterworth Band-Pass Filter By: David Fanning on Sun, 12 December 2010 09:24
		Re: Butterworth Band-Pass Filter By: David Fanning on Sun, 12 December 2010 09:19
		Re: Butterworth Band-Pass Filter By: burton449 on Sun, 12 December 2010 09:07
		Re: Butterworth Band-Pass Filter By: David Fanning on Sun, 12 December 2010 09:02
		Re: Butterworth Band-Pass Filter By: David Fanning on Sun, 12 December 2010 08:56
		Re: Butterworth Band-Pass Filter By: burton449 on Sun, 12 December 2010 08:29
		Re: Butterworth Band-Pass Filter By: David Fanning on Sat, 11 December 2010 20:37
		Re: Butterworth Band-Pass Filter By: burton449 on Sun, 12 December 2010 09:28
		Re: Butterworth Band-Pass Filter By: burton449 on Sun, 12 December 2010 09:30

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