[L2Ork-dev] Bug with high pass and band pass filters

Ivica Ico Bukvic ico at vt.edu
Thu Jan 29 05:16:23 UTC 2015


Thanks for the clarification. In that case this bug should be reported 
upstream to Miller et al.

On 1/27/2015 10:39 AM, Gilberto Agostinho wrote:
> Do you mean the object __[spectrogram~]__ in that patch of mine? 
> That's the only abstraction being used there. But It's possible to 
> _hear_ the problem with some of the filters (particularly with a 
> narrow band pass: if you make a glissando upwards, you can hear that 
> it stops to "move" at around 12 kHz).
>
> On 27/01/15 14:29, Ivica Bukvic wrote:
>>
>> FWIW, you may also want to check the accuracy of abstractions you are 
>> using.
>>
>> On Jan 26, 2015 8:19 AM, "Gilberto Agostinho" 
>> <gilbertohasnofb at googlemail.com 
>> <mailto:gilbertohasnofb at googlemail.com>> wrote:
>>
>>     Small update: all these bugs are also present in pd vanilla 0.46.5.
>>
>>     On 26/01/15 13:05, Gilberto Agostinho wrote:
>>
>>         Hi Ico,
>>
>>         I just compiled pd vanilla 0.45.4 and I can confirm the bug
>>         is also present there. I contacted the user who reported it
>>         to be an extended only bug to know if he is sure about that
>>         and I also asked him to test my patch in his computer. If it
>>         turns out he was wrong about vanilla's filters being bug free
>>         (which is the very likely scenario), I will contact Miller
>>         about it and also report the bug at sourceforge. I will let
>>         you know about it as well.
>>
>>         Take care,
>>         Gilberto
>>
>>         On 26/01/15 05:28, Ivica Ico Bukvic wrote:
>>
>>             Forgot to mention, svf~ acts the same way in your patch.
>>             Are you sure everything works as expected in the
>>             abstractions you're using?
>>
>>             Also, have you checked with Miller and if so, what was
>>             his response?
>>
>>             Best,
>>
>>             Ico
>>
>>             On 01/25/2015 11:24 PM, Ivica Ico Bukvic wrote:
>>
>>                 Thanks, Gilberto. Even with the d_filter.c being
>>                 essentially synonymous with pd vanilla (latest
>>                 version), the problem apparently persists. I am not
>>                 sure why. Essentially, the behavior is the same in
>>                 both the latest version of pd vanilla and the one we
>>                 currently have in pd-l2ork. Did you see it behave
>>                 differently in vanilla? If so, what version were you
>>                 using and can you please create a video of that
>>                 version running the same patch?
>>
>>                 Best,
>>
>>                 Ico
>>
>>                 On 01/24/2015 08:47 PM, Gilberto Agostinho wrote:
>>
>>                     Hi Ico,
>>
>>                     Thanks for the quick fixes, I will be happy to
>>                     have a look on it. The only thing is I never
>>                     compiled pd-l2Ork from source (I only used debian
>>                     packages made by others for it), and on my first
>>                     try I got some error messages. I am travelling
>>                     the whole day tomorrow so I am a bit busy now to
>>                     try figuring out what I am doing wrong, but I can
>>                     certainly do this once I get home. However, I
>>                     prepared a simple patch that can be used to test
>>                     the filters, together with a video of the current
>>                     behaviour with my build:
>>
>>                     https://www.dropbox.com/sh/m4vsko1th5ppgnw/AABWywJqu88_ZEdp_pk3yQdda?dl=0
>>
>>                     http://youtu.be/5nIJIWhqusk
>>
>>                     Take care,
>>                     Gilberto
>>
>>                     On 24/01/15 21:11, Ivica Ico Bukvic wrote:
>>
>>                         Gilberto,
>>
>>                         I just committed experimental fix into git.
>>                         Can you please test and report if this is now
>>                         fixed?
>>
>>                         Best,
>>
>>                         Ico
>>
>>                         On 01/22/2015 01:12 PM, Gilberto Agostinho wrote:
>>
>>                             Hello all,
>>
>>                             Today an user discovered a bug with the
>>                             high and bang pass filters in Pd
>>                             0.43.4-extended and the same bug is
>>                             present in Pd-l2Ork. The same user
>>                             informs that Pd vanilla 0.45.4 does not
>>                             display these bugs.
>>
>>                             In case you want to have a look on this
>>                             issue, here is his bug ticket:
>>                             https://sourceforge.net/p/pure-data/bugs/1187/
>>                             And here is the thread where this was
>>                             discussed:
>>                             http://forum.pdpatchrepo.info/topic/8967/highpass-hip-not-working-as-expected
>>
>>                             Best,
>>                             Gilberto Agostinho
>>                             _______________________________________________
>>                             L2Ork-dev mailing list
>>                             L2Ork-dev at disis.music.vt.edu
>>                             <mailto:L2Ork-dev at disis.music.vt.edu>
>>                             http://disis.music.vt.edu/listinfo/l2ork-dev
>>
>>
>>
>>
>>                     _______________________________________________
>>                     L2Ork-dev mailing list
>>                     L2Ork-dev at disis.music.vt.edu
>>                     <mailto:L2Ork-dev at disis.music.vt.edu>
>>                     http://disis.music.vt.edu/listinfo/l2ork-dev
>>
>>
>>
>>
>>
>>
>>
>>     _______________________________________________
>>     L2Ork-dev mailing list
>>     L2Ork-dev at disis.music.vt.edu <mailto:L2Ork-dev at disis.music.vt.edu>
>>     http://disis.music.vt.edu/listinfo/l2ork-dev
>>
>>
>>
>> _______________________________________________
>> L2Ork-dev mailing list
>> L2Ork-dev at disis.music.vt.edu
>> http://disis.music.vt.edu/listinfo/l2ork-dev
>
>
>
> _______________________________________________
> L2Ork-dev mailing list
> L2Ork-dev at disis.music.vt.edu
> http://disis.music.vt.edu/listinfo/l2ork-dev

-- 
Ivica Ico Bukvic, D.M.A.
Associate Professor
Computer Music
ICAT Senior Fellow
DISIS, L2Ork
Virginia Tech
School of Performing Arts – 0141
Blacksburg, VA 24061
(540) 231-6139
ico at vt.edu
www.performingarts.vt.edu
disis.music.vt.edu
l2ork.music.vt.edu

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://disis.music.vt.edu/pipermail/l2ork-dev/attachments/20150129/172794df/attachment.html>


More information about the L2Ork-dev mailing list