[PD] vanilla partitioned convolution abstraction

Alexandre Torres Porres porres at gmail.com
Tue Jan 8 17:13:16 CET 2019

Ok, here's the new deal...


there are two subpatches for testing, one is light with a relative big
window partition (1024) and a short Impulse Response (2 secs).

The other is quite heavy, it's an 8 sec long IR with a window size of 512!
This one takes just a bit over 50% of my CPU power, and I'm on a last
generation macbook pro (2.6Ghz processor)... but I need to increase the
Delay (msec) from 5 to 10 in the audio settings, otherwise I get terrible

William Brent's convolve is ridiculously much more efficient, the same
parameters take about 14% of my CPU power and I can use a delay of 5 ms in
the audio settings.

But anyway, this is useful for teaching and apps that implement a light
convolution reverb (short IR/not too short window) need pure vanilla
(libpd/camomille and stuff)


Em dom, 6 de jan de 2019 às 14:25, Alexandre Torres Porres <porres at gmail.com>

> Meanwhile, I deleted the original file so people can't get it anymore :)
> Em dom, 6 de jan de 2019 às 14:16, Alexandre Torres Porres <
> porres at gmail.com> escreveu:
>> Hi, quick updates and developments over my weekend
>>> On Thursday, 3 January 2019, 04:19:50 GMT, Alexandre Torres Porres <
>>> porres at gmail.com> wrote:
>>> what you think, is it working?
>> So, the patch/algorithm was wrong and I've fixed
>>> Both objects on the help file take about 40% of my CPU power, but I'm on
>>> a wild machine
>> I was able to do a few more things and make it much more efficient
>>> I tried the idea of having each partition work with FFT saved on tables,
>>> so we wouldn't need to perform FFTs in different instances of clone, but
>>> that doesn't seem to be possible.
>> This is because things were wrong, like I said, now that I've fixed it,
>> that was possible.
>> But my current version is not vanilla anymore, as I'm developing this
>> object to include it in my "ELSE" library. Once I'm done I'll try to make
>> another vanilla compatible abstraction and re share it!
>> Cheers
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