hi, the only realtime audio tool which use GPU I knew is the one from LiquidSonic http://www.liquidsonics.com it uses CUDA to compute reverb with convolution
This is the only application I found when I was interested in 3 years ago for my master thesis but it was the very first steps of CUDA, maybe more audio applications are available now, but I didn't heart and this tool works with a NVIDIA Geforce 8, far from RPi's GPU... cheers a -- do it yourself http://antoine.villeret.free.fr 2013/2/9 chris clepper <cgclep...@gmail.com> > GPUs are not made for very low latency processing of tiny chunks of data. > Trying to run the GPU at 5k to 100k FPS on 256 bytes of data is not going > to work well at all. Processing a few seconds of audio at once would show > massive gains though. > > Just ask yourself - how many professional DAWs use the GPU to process > their audio? Even the one sold by the company with full access to every > part of the GPUs they put in their own computers? > > Also, I don't get the obsession with the Pi. There are now lots and lots > of under $100 ARMv7 dual core (!) boards that run Linux and have way more > I/O options. Why not get something not totally out of date to begin with? > > > On Sat, Feb 9, 2013 at 7:51 AM, Pierre Massat <pimas...@gmail.com> wrote: > >> Hi again Katja, >> >> I just read through it. Couldn't find anything about having the GPU >> process some audio. It's really mostly about why it's a bad (or good) thing >> to keep the GPU closed-source (at least that's what I understand [?]). >> >> So I guess there isn't must we can do on our own to access the GPU. But >> then, what can Eben and his team do about it ? I'd like to know what answer >> we can give him. If he says "just waiting for an application like this" I >> am assuming that it must have aroused his interest somehow. And I believe >> that it would be great if people in the Pd community got involved. All I >> can provide is some testing, but others could contribute more (if i'm not >> mistaken, Miller Puckette did a great job fixing the analog out for >> instance). I think we should try and play a part in the development of the >> Pi. And if we're lucky we'll finally have that Pd box people have been >> dreaming about for years. >> >> Cheers, >> >> Pierre. >> >> 2013/2/9 katja <katjavet...@gmail.com> >> >>> Hi Pierre, >>> >>> There has been intensive discussion about GPU processing on RPI: >>> >>> http://www.raspberrypi.org/phpBB3/viewtopic.php?f=33&t=6188 >>> >>> Did you read it? In the light of this discussion, I wonder what Eben >>> means when writing "We have a bunch of GPU compute available on the device >>> just waiting for an application like this." >>> >>> Anyway it's great they have put your project on RPi blog. You will be >>> famous, Pi Massat! Congrats again. >>> >>> Katja >>> >>> >>> >>> On Fri, Feb 8, 2013 at 10:51 AM, Pierre Massat <pimas...@gmail.com>wrote: >>> >>>> Dear all, >>>> >>>> Please read below the message I received from Eben Upton, the boss of >>>> Raspberry Pi foundation. >>>> It looks like he was impressed by the video I made, and he says that >>>> there's a possibility of letting the GPU do some DSP computation. >>>> I guess you'll all agree that this is awesome news. >>>> >>>> I have no idea how we can proceed now. I think i'm absolutely incapable >>>> of doing anything useful in this field, so i told him that i would transfer >>>> this message to you, hoping that Miller, HC, Katja (and others) would know >>>> what needs to be done. We should probably ask him if you guys could work >>>> directly with their developers. >>>> >>>> Let me know what you think. >>>> >>>> Cheers! >>>> >>>> Pierre. >>>> >>>> ---------- Forwarded message ---------- >>>> From: Eben Upton <e...@raspberrypi.org> >>>> Date: 2013/2/8 >>>> Subject: Re: RPi as multi-effects for guitar >>>> To: Pierre Massat <pimas...@gmail.com> >>>> >>>> >>>> Hi Pierre >>>> Awesome stuff - I think Liz is preparing a blog post about this as we >>>> speak. I'd be very interested in knowing a bit more about the DSP code >>>> that runs this stuff. We have a bunch of GPU compute available on the >>>> device just waiting for an application like this. >>>> >>>> Cheers >>>> Eben >>>> >>>> On Thu, Feb 7, 2013 at 2:29 AM, Pierre Massat <pimas...@gmail.com> >>>> wrote: >>>> > Hi, >>>> > >>>> > I write a blog about how to make guitar effects with computers >>>> running Pure >>>> > Data in real-time. >>>> > When I first heard about the Raspberry Pi I thought it would be great >>>> if I >>>> > could use it for the same purpose. It would only be much cheaper, and >>>> much >>>> > smaller than my current laptop, and could fit in my hand-made >>>> stompbox. >>>> > Recent improvements in Raspbian have finally made this possible, and >>>> this >>>> > makes me very happy ! >>>> > The Raspberry Pi is now actually capable of running rather demanding >>>> Pure >>>> > Data patches in (quasi-) real-time (at least with a latency that's low >>>> > enough to play live with it). >>>> > I quickly assembled a small patch to test it and make a video to >>>> demonstrate >>>> > that it actually works very well. >>>> > >>>> > It is obviously not the use the RPi was originally intended for, but >>>> to me >>>> > (and I'm sure to other musicians as well), this sounds like a >>>> revolution. >>>> > >>>> > I'm currently documenting my setup on my blog : >>>> > - video : >>>> > >>>> http://guitarextended.wordpress.com/2013/01/27/real-time-guitar-effects-with-raspberry-pi-pd-and-arduino/ >>>> > - blog post about hardware : >>>> > >>>> http://guitarextended.wordpress.com/2013/01/31/raspberry-pi-multi-effects-overview-of-the-setup/ >>>> > >>>> > There's no trick, the Pi really IS doing all the DSP work. A reader >>>> posted a >>>> > comment to ask where the computer was :) >>>> > >>>> > I take this opportunity to thank the RPi foundation for all the good >>>> work >>>> > you put in this amazing tiny thing. I see that the cam should be out >>>> in a >>>> > few months, this is all very exciting. I'm sure the Pi has already >>>> changed >>>> > the life of a lot of people ! >>>> > >>>> > Cheers, >>>> > >>>> > Pierre. >>>> > >>>> > >>>> > >>>> >>>> >>>> _______________________________________________ >>>> Pd-list@iem.at mailing list >>>> UNSUBSCRIBE and account-management -> >>>> http://lists.puredata.info/listinfo/pd-list >>>> >>>> >>> >> >> _______________________________________________ >> Pd-list@iem.at mailing list >> UNSUBSCRIBE and account-management -> >> http://lists.puredata.info/listinfo/pd-list >> >> > > _______________________________________________ > Pd-list@iem.at mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > >
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