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Hmm, I just realized I had forgotten about the commit "*added
experimental bugfix to the bp~ and hip~ bug" (from
<a class="moz-txt-link-freetext" href="https://github.com/pd-l2ork/pd/commit/50719c4c455291be3ac679486f7e4d72706bd9e4">https://github.com/pd-l2ork/pd/commit/50719c4c455291be3ac679486f7e4d72706bd9e4</a>
). I still haven't compiled and tested it yet, but if [hip~] behaves
properly now then please ignore my previous message.<br>
<br>
Best,<br>
Gilberto<br>
<br>
<div class="moz-cite-prefix">On 31/01/15 12:59, Gilberto Agostinho
wrote:<br>
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Hello all,<br>
<br>
Recently I wrote a message here and in pd's mailing list about
some possible bugs involving the filters [hip~] and [bp~]. As it
turns out, those were not bugs but rather limitations of the
algorithms themselves (the discussion in pd's mailing list can be
found here: <a moz-do-not-send="true"
class="moz-txt-link-freetext"
href="https://www.mail-archive.com/pd-list@lists.iem.at/msg02169.html">https://www.mail-archive.com/pd-list@lists.iem.at/msg02169.html</a>
)<br>
<br>
The filter [bp~] cannot be used for frequencies higher than 12
kHz, which in the end is not much of a big deal in most cases (and
in those cases, there is always [vcf~] to solve it since it does
not show this limitation). But the problems with [hip~] cannot be
that easily ignored: it does not output -3 dB at the cutoff
frequency as expected. But another high pass filter included in
pd, [iemlib/hp1~], does this perfectly well and also has no
limitation for higher frequencies.<br>
<br>
So here is the thing: we do have this perfectly good high pass
filter that is slightly more hidden than what most people consider
to be the "default" HP filter (virtually all tutorials and books
about Pd use [hip~], and I guess the majority of users are very
likely to be using it only). So why not make [hp1~] the default
filter itself? That is, replace [hip~] for [hp1~].<br>
<br>
I know this is not very orthodox, it may break someone's patch if
that patch depends on this inconsistency of the original [hip~]
and when opening a patch in pd vanilla or extended you would be
welcomed with the original [hip~], but in the end it would make
pd-l2ork better in my opinion. <br>
<br>
Best,<br>
Gilberto<br>
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