comp.lang.idl-pvwave archive: archive » Re: signal processing package for IDL

Home » Public Forums » archive » Re: signal processing package for IDL

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Re: signal processing package for IDL [message #467 is a reply to message #466]

Sat, 25 July 1992 07:23

dpkemp
Messages: 4
Registered: July 1992

Junior Member

In article <ghsu.711219193@critical> ghsu@critical.nswc.navy.mil () writes:
> I am interested in finding procedures for signal processing (design of
> filters, filtering, etc), similar to the signal processing toolbox for
> matlab), for IDL. Is there something like that in existence? Is
> there such package available for pvwave? Any pointer will be
> appreciated.
>
Don't get your hopes up. Filter design is probably best done by
a specialized application (there are lots of them), but it would be
nice to do the actual filtering in PV-wave.

Unfortunately, the technical support person I talked to at PVI didn't
know anything about filters, not even the vocabulary. I asked if there
was any primitive to support Infinite Impulse Response (variously known
as Auto Regressive, or Recursive) filters, and this person didn't know
what I was talking about.

FIR filtering is, of course, supported by PV-wave's convolution operation,
but there doesn't seem to be any operation for doing recursive filters
without doing it sample-by-sample with an explicit loop - horribly slow.

Question for the net: Am I missing something in the documentation?
IIR is a term used by DSP people, AR is used by statistics people. Is
there some other term used in Geology, or Fluid Dynamics, or whatever,
that I should have been asking for?

--
Dave Kemp dpkemp@afterlife.ncsc.mil
------------------------------------------------------------ -----------------
"The use of history as therapy means the corruption of history as history."
-- Arthur Schlesinger (quote stolen from Chet Ramey, CWRU)

Report message to a moderator

[Message index]

		Re: signal processing package for IDL By: greg on Wed, 19 August 1992 09:30
		Re: signal processing package for IDL By: jacobsen on Thu, 30 July 1992 18:13
		Re: signal processing package for IDL By: thompson on Thu, 30 July 1992 11:47
		Re: signal processing package for IDL By: bhill on Thu, 30 July 1992 11:51
		Re: signal processing package for IDL By: dpkemp on Thu, 30 July 1992 05:56
		Re: signal processing package for IDL By: kevin on Wed, 29 July 1992 15:10
		Re: signal processing package for IDL By: ritscher on Wed, 29 July 1992 06:53
		Re: signal processing package for IDL By: dmatthews on Sun, 26 July 1992 13:10
		Re: signal processing package for IDL By: dpkemp on Sat, 25 July 1992 07:23

Previous Topic:	IDL + Emacs' shell mode = an IDL 'next-error' elisp function
Next Topic:	PVI jerk toots own horn on net [flame; how'd you guess? :-]

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Wed Dec 03 14:57:44 PST 2025

Total time taken to generate the page: 0.48424 seconds