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

Gilberto Agostinho gilbertohasnofb at googlemail.com
Mon Jan 26 10:56:32 UTC 2015

Hi Ico,

I will check this on Pd-vanilla right now (I actually don't have it 
installed). The report that it works with vanilla comes from an user in 
the Pd forum, he says that Pd vanilla 0.45.4 does not produces the bug 
on his Windows machine, while extended does. He also reported it on 
Sourceforge: https://sourceforge.net/p/pure-data/bugs/1187/

I will test it now with vanilla and, if it works differently than on 
pd-l2Ork, then I will make another video.

About svf~, it actually works even worse then bp~ on my l2Ork 
installation, it stops to work at around 10 kHz instead of 12kHz of bp~. 
On the other hand, vcf~ works perfectly well.

I will make some more tests here and I report to you later. About 
Miller, I didn't contact him about it (particularly since the user that 
reported the bug in the forum told us that vanilla was bug-free, so we 
all thought that this had been corrected by Miller), but if this is 
still present with vanilla I will most certainly contact him.

Thanks a lot and take care,

On 26/01/15 05:24, 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
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