<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div><span>I seem to remember sitting in Hans' apartment making the help files for the windowing library. There were none, and I found the objects useful as drop-in FFT windows (which of course is the point) and for other PSOLA stuff...</span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; background-color: transparent; font-style: normal; "><span>I had flu in New York. Perhaps that made me wikipedia-lazy!</span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; background-color: transparent; font-style: normal; "><span>I suggest that the bugs are in the descriptions rather than the objects, or alternatively the formulae have been modified to make them more "pd standard" in the objects.</span></div><div
style="color: rgb(0, 0, 0); font-size: 16px; font-family: 'times new roman', 'new york', times, serif; background-color: transparent; font-style: normal; "><span>I'm sure nobody will mind if someone makes this obscure but useful library more mathematically correct.</span></div><div><span>Ed</span></div><div></div><div> </div><div>Gemnotes-0.2: Live music notation for Pure Data, now with dynamics!<br>http://sharktracks.co.uk/<br><br><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; margin-top: 5px; padding-left: 5px;"> <div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt; "> <div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt; "> <div dir="ltr"> <font size="2" face="Arial"> <hr size="1"> <b><span style="font-weight:bold;">From:</span></b> Hans-Christoph Steiner <hans@at.or.at><br> <b><span style="font-weight: bold;">To:</span></b> pd-list@iem.at
<br> <b><span style="font-weight: bold;">Sent:</span></b> Wednesday, 24 October 2012, 2:48<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PD] windowing extended objetcs, mistakes on help files and how to make them into vanilla patches<br> </font> </div> <br><br>I don't quite follow, but if you think there are bugs in the windowing<br>objects, you should file a bug report.<br><br>.hc<br><br>On 10/16/2012 05:03 PM, Alexandre Torres Porres wrote:<br>> seem to have nailed the gaussian window, but with different width values<br>> than the object.<br>> <br>> 2012/10/16 Alexandre Torres Porres <<a ymailto="mailto:porres@gmail.com" href="mailto:porres@gmail.com">porres@gmail.com</a>><br>> <br>>> Hi there, I was studying the window functions for FFT, so I was trying to<br>>> build into vanilla pacthes the window functions that come on Pd-Extended<br>>> [windowing] package. I got to do them all, but kaiser~
and gaussian~<br>>><br>>> Do any of you feel capable to perform this ver nerdy taks?<br>>><br>>> Well, anyway, here are some inconsistencies/mistakes I found ont the<br>>> description of the formulas that are present in the help of those external<br>>> objetcts:<br>>><br>>> - blackman~ instead of 0.8 it should be 0.08<br>>><br>>> - welch formula: 1-abs(x) - not sure, but doesn't seem to be right or<br>>> clear. I used this one: <a href="http://paulbourke.net/miscellaneous/windows/" target="_blank">http://paulbourke.net/miscellaneous/windows/</a><br>>><br>>> - barlett~: 1-x^2 doesn't seem to be right or clear either, I used this<br>>> one: <a href="http://mathworld.wolfram.com/ApodizationFunction.html" target="_blank">http://mathworld.wolfram.com/ApodizationFunction.html</a><br>>><br>>> - connes~: cos(pi*x/2) - it's the same as cosine~ so it can't be right,
I<br>>> used the above link again.<br>>><br>>> Cheers<br>>> Alex<br>>><br>>><br>>><br>>><br>> <br>> <br>> <br>> _______________________________________________<br>> <a ymailto="mailto:Pd-list@iem.at" href="mailto:Pd-list@iem.at">Pd-list@iem.at</a> mailing list<br>> UNSUBSCRIBE and account-management -> <a href="http://lists.puredata.info/listinfo/pd-list" target="_blank">http://lists.puredata.info/listinfo/pd-list</a><br>> <br><br>_______________________________________________<br><a ymailto="mailto:Pd-list@iem.at" href="mailto:Pd-list@iem.at">Pd-list@iem.at</a> mailing list<br>UNSUBSCRIBE and account-management -> <a href="http://lists.puredata.info/listinfo/pd-list" target="_blank">http://lists.puredata.info/listinfo/pd-list</a><br><br><br> </div> </div> </blockquote></div> </div></body></html>