Talk:Digital signal processing

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Nav box creation

I created a nav box for DSP: {{DSP}}. Knock yourself out... Cburnett 04:11, 2 December 2006 (UTC)[reply]

External Links, Movable Feast

I've cleared the external links because they are unnecessary, and serve to attract linkspam. Please add content to the article and cite references. Jehochman (^Talk/_Contrib) 04:07, 11 December 2006 (UTC)[reply]

Least-squares spectral analysis

This recently created page is tied up in conflict. Extra eyes and opinions would be welcome; see the RFC on its talk page, and other talk sections; expert content input would also be of considerable value, but the topic is a bit narrow so I don't expect to find an expert here. Dicklyon 00:52, 23 October 2007 (UTC)[reply]

Autocorrelation domain

I like to point your attention to the following issue. According to this page autocorrelation has its own domain. Can somebody please explain why this is stated as such? Because the output values are a function of time! — Preceding unsigned comment added by 195.241.238.88 (talk) 20:02, 19 December 2011 (UTC)[reply]

Why is the Autocorrelation domain flagged with "citation needed" when none of the other domains are? If autocorrelation, like the others, is its own link, then why should a citation be needed? rowley (talk) 20:44, 19 December 2011 (UTC)[reply]

I think it may be fumble fingers (I've assumed that and edited the article accordingly), or it could be a confusion in menaing between domain as in field of analysis, and domain as in units on x axis. Same question would be asked of wavelets, the units are seconds and Hz in the plots I look at. Greglocock (talk) 06:24, 20 December 2011 (UTC)[reply]

FIR vs IIR

The distinction between FIR and IIR is not recursion. for example, y[n] = y[n-1] + x[n] - x[n-k] is not an IIR filter as it could be rewritten as the sum of the last k samples. The actual distinction is based on the number of non-zero outputs for a non-zero input.

And also, the ideal lowpass "sinc" filter is an IIR filter, though it is commonly written using only inputs samples.

— Preceding unsigned comment added by 24.130.9.71 (talk) 21:20, 9 September 2012 (UTC)[reply]

In your example filter, the output can be nonzero forever with no input. It is not what is usually called an FIR filter, nor what is usually called stable. I reverted your edit to the article; I believe it is correct as stated. Dicklyon (talk) 04:12, 10 September 2012 (UTC)[reply]