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From: robert bristow-johnson <r...@audioimagination.com>
Newsgroups: sci.math.num-analysis,comp.dsp,sci.math
Subject: Re: Iterative Match Filterings
Date: Fri, 06 Apr 2012 13:43:49 -0400
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On 4/5/12 11:51 PM, Bret Cahill wrote:
> On Apr 5, 5:48 pm, eric.jacob...@ieee.org (Eric Jacobsen) wrote:
>> On Thu, 5 Apr 2012 16:46:11 -0700 (PDT), Bret Cahill
>>
>>>> Do you mean matched filtering or is "match" filtering something
>>>> different?
>>
>>> North filter.
>>
>> Far more commonly known as a "matched filter",
>
> How long did it take you to figure that out?
>
>> which requires no
>> special kind of convolution, only the ordinary, mundane kind.  There's
>> no deconvolution involved.
>
> How is the original waveform recovered with a North Filter?

Bret, can you stick with the common semantic?  before today, i have 
never heard of a "North filter".  i am assuming from Eric's response and 
yours, that it is synonymous with "matched filter".


a matched filter is not about recovering an original waveform.  it is 
about *detecting* it (among some other "original waveforms") in the 
presence of noise or other crap that might obscure it.


-- 

r b-j                  r...@audioimagination.com

"Imagination is more important than knowledge."