KVR Audio

brok landers · Post by **brok landers** » Fri Jul 11, 2008 1:07 am

i'm not talking about a modulation that makes it sound like a church, rather talking about the fact that a real reverb in nature is never static, it's always modulated, air pressure, temerature, air movement, etc ... that's what a ir-reverb can't provide, be it a small, unobstusive room or a large concert stage ...
nevermind, i thought i'd try ...

Melkor · Post by **Melkor** » Fri Jul 11, 2008 6:38 am

I duuno about anyone else ..... but i would personally LOVE

an IR verb runnin off a graphics card at nil CPU cost ....

Bring it on Nils

djsubject · Post by **djsubject** » Fri Jul 11, 2008 10:41 am

Melkor wrote:I duuno about anyone else ..... but i would personally LOVE an IR verb runnin off a graphics card at nil CPU cost ....

Bring it on Nils

yep all gpu fx welcome here

Subz

S-N-S · Post by **S-N-S** » Fri Jul 11, 2008 5:29 pm

can i use these with this graphic card

asus eah3650
???

Spitfire31 · Post by **Spitfire31** » Fri Jul 11, 2008 9:46 pm

brok landers wrote:i'm […] rather talking about the fact that a real reverb in nature is never static, it's always modulated, air pressure, temerature, air movement, etc ... that's what a ir-reverb can't provide, be it a small, unobstusive room or a large concert stage ...

But that's the whole idea of VirSyn's REFLECT.

It's a convolution (sorry

) between an IR and an algorithmic reverb. The IR:s take care of the early reflections and the algos (modulated, if you wish) take care of the tails, with user tweakable balance between the two.

REFLECT sounds wonderful and alive and it's become my go-to verb thee days. Doesn't run on a GPU, though...

/Joey

Nils Schneider · Post by **Nils Schneider** » Sat Jul 26, 2008 6:42 pm

You might check out this thread:

http://www.kvraudio.com/forum/viewtopic.php?t=222978

I've released a first version of the GPU convolution reverb, free for everyone to try out!

S-N-S · Post by **S-N-S** » Sat Jul 26, 2008 7:10 pm

i cant get this one to work

maybe it doesent support my graphic card

its a asus eah3650

cant get this to show up in renoise??

jobromedia · Post by **jobromedia** » Sun Jul 27, 2008 6:59 am

Redownloaded thinking maybe support has been added. But no. Somehow I still prefer CPU powered effects in front of GPU powered effects. Intresting in theoretic use, utterly useless in practical use.

It would be nicer if you created a reverb that can load BSP maps and derivating it's specifications to build a reverb from it. Cpu powered ofcourse.

Zaphod (giancarlo) · Post by **Zaphod (giancarlo)** » Sun Jul 27, 2008 7:41 am

BSP = binary space partitioning maps?

jobromedia · Post by **jobromedia** » Sun Jul 27, 2008 8:17 am

Yeah. Same format that Quake4, Doom3 etc etc uses.

Zaphod (giancarlo) · Post by **Zaphod (giancarlo)** » Sun Jul 27, 2008 9:05 am

ah ah, I coudn't believe you was referring exactly to the same thing I was thinking about.
Actually I'm analyzing the quake III code, helped by a book from m abrash. Ah ah, PVS BSP.
There could be applications for video games too, or machinima. I agree, I found it a good idea and I like the code written by carmack. Why are you interested in that? Contact me if you wish.

Krakatau · Post by **Krakatau** » Sun Jul 27, 2008 9:43 am

Nils Schneider wrote:I'm back

Algorithm-links to impulse-reverb are welcome

www.anak-krakatoa.net/~downl/misc/G.exe

_____

_____

Simon82 · Post by **Simon82** » Mon Dec 15, 2008 12:36 am

Hi everyone, I'm an Italian student working on a project about creating a VST plugin which exploits CUDA gpu computational power.
I'm using Microsoft Visual C++ 2005.
I've created a static library called "cudaModule.lib" which contains all CUDA function calls that make memory access operations, kernel computations and all other operations involving the gpu.
Now I'm trying to modify a general and simple gain plugin ( again.dll ) in order to use my "cudaModule" library and have it working on my gpu.
After some coding problems, now everything compiles fine and my VST plugin is loaded without problems.
What don't work are CUDA memory access operations. When I try to access data from the device memory, the plugin gets turned off because of errors.

Isn't it possible to do what I want to do? Am I making some mistakes? Should I try different ways?
It's hard to understand what's the problem when my VST plugin is running.
Please anyone expert give me some hints... Nils are you there?

Thanks a lot to everyone and sorry for my not so good English
Simon

Zaphod (giancarlo) · Post by **Zaphod (giancarlo)** » Mon Dec 15, 2008 5:09 am

you should call all your kernels from the same thread. It's mandatory for cuda. You should have your own thread for this reason, you can't rely on the hosts call to your functions (maybe they are spread across several threads). Your project is not so simple (like again.dll), I'm sorry. But if you are a simple student, your project could be semplified a lot. The host calls for frames. In general they are 1024 samples (asio buffer size). You could allocate memory, call kernels and deallocate memory each time. The time slice is big enough for it, your teacher will understand.

btw: you posted in the wrong section.

Nils Schneider · Post by **Nils Schneider** » Mon Dec 15, 2008 12:19 pm

As already mensioned, Take care to use the same thread for very CUDA call, even init and shutdown as the host may call from different threads.

Additionally, use ring buffers for your processing blocks as the host may call process() with less samples than the actual block size (good example is fruity loops to test it).

GPU Delay - A delay plugin running on a graphics card