Hi, someone familiar with signal processing? I have a question about signal extraction. Say I have a signal s1(t) that I don't know and I want to extract. I mix it with a known signal s2(t), and shift the delay between these two signals. So my mixed signal is s1(t) + s2(t-tau), where tau is the delay between these two signals. Then I look at the spectrum of the mixed signal as a function of tau: fourier(s1(t) + s2(t-tau)), from which I can extract the unknown signal s1.
It seems to me that this extraction process should have been used and studied before, so does anyone know what the name of this process is, in signal processing? I'm trying to learn more about it, but I don't know where to look and what terms to google.
Heh, yeah. At some point, the site grew rapidly that keeping up with the newly spawned tags became hard. Unanswered also kept piling up — we've had at least 2 drives to clean up close + delete or post an answer to bring them down.
@Guesswhoitis. I've been merging a few behind the scenes lately, e.g. charts -> plotting but it's a bit of a mess. There are some weird generic ones like core-language and data that I don't really know what to do with. I'm open to views.
Also, if anyone has suggestions about what to do about map I'd welcome them. I think it can be merged into functional-style but I'm open to other suggestions.
@Verbeia, I seem to have a dim recollection of a discussion where it was argued that plotting and charts ought to be kept separate, but I can't find it…
Aside: this is my first time to try using SE over a smartphone. Hating it so far…
@Guesswhoitis. I do that a lot, but it's a drag. Backtick quoting (which we do a lot here for keywords) is very cumbersome, getting anything selected as desired requires some kind of black magic on these javascript ridden pages.
@Guesswhoitis. charts didn't have a tag wiki so it probably wasn't one we planned on early on. Anyway, I'm happy to do more tag clean-ups and merges as people find them. My time has been a bit restricted lately but I'm hoping to have some evenings free from now on.
Recently, the conersionrules tag was created. Setting the discussion of its usefulness aside, how can we correct its spelling (should be conversionrules)?
On the tag's synonym suggestion page, it says:
Users with more than 2500 reputation and a total answer score of 5 or more on the tag, ca...
@Guesswhoitis. I find it kind of difficult asking you all about this. On the one hand, I'm interested in your wellbeing and your stories, but I also don't like to invade your privacy.
Now, here's a conundrum: after going back to the city about a week ago, some people have said that I became thinner, and some people said that I became stouter. I don't know who to believe. :P
I guess I can register for one, once I can borrow a computer.
(I'm glad my friend is letting me use his smartphone, but I'm still hating the SE interface. :P)
I'm away as well, studying the rest of the evening. Exam coming up in two weeks. Thought I'd never have to do that again after finishing university. O well, never too old to learn something new.
@Verbeia IMO we should just get rid of any that are so vague or broad as to be useless for categorization purposes. For example data can be changed to dataset or curated-data as appropriate, or otherwise just deleted.
@Guesswhoitis. while you were gone there was a community collection to fund an update to version 10 for @Mr.Wizard. If you were interested in doing the same thing I would gladly donate purely as a thank you for the pleasure I've gained from reading your posts. I can't speak for others but I have the feeling that many would agree with me.
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@Guesswhoitis. IIRC you have also gained an acknowledgement in one of @halirutan's publications. Not sure if you were aware of this or not.
I'm looking for documentation for the XML template tags; I posted a question about it here - please take a look if you have the time. (I choose WC over MMA.SE because of suitability for reference requests.)