Hi, happy new year.

Here's a vanilla partitioned convolution abstraction https://www.dropbox.com/s/pbkg8xy2yhy9bpo/conv~-vanilla.zip…

It is based on this http://tre.ucsd.edu/wordpress/?p=772

what you think, is it working? Both objects on the help file take about 40% of my CPU power, but I'm on a wild machine

I made some changes on the original work by Tom Erbe. It is supposed to be more efficient because the FFT on the input is only done once! 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. And, well, it is made as an abstraction and all you need to do is give it the window size and the IR sound file name... it calculates the number of instances on that and I needed to rely on some dinamic patching magic

cheers

what you think, is it working?

Hi, it wasn't correct, so I deleted it and I'm working on a new version, sorry

Hang in there!

Ok, here's the working vanilla partitioned convolution patch!

https://www.dropbox.com/s/05xl7ml171noyjq/convolution~.zip…

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 about 57-58% 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 clicks!

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)

ps. Bug, for some reason, you may need to recreate the object so the sound comes out. I have no idea yet why...

Cheers!

Hi there. thanks for this.

I'm trying to get this to run on libpd which is an earlier version than .50-0

is there anyway to do that?

thanks

Hi, every time I press the switch DSP on in the test patch Pd crashes. In the debugger it says 'resizebytes() failed -- out of memory' when the patch is loaded up which may be a cause?

@adammccaffrey probably running out of memory.
How much Random Access Memory does your machine have?

16GB @lacuna

@adammccaffrey you can find the error message in the sources:
https://github.com/pure-data/pure-data/blob/master/src/m_memory.c

the patch is resizing the cloned arrays
here it uses >4Gb of ram

operating system? 32 / 64 bit?
PD-version? 32 /64 bit?

I am using 32 bit but i will try 64 bit now, thanks

@lacuna 64bit pd works, cheers