[LAD] FLTK vs GTKmm

David Robillard dave at drobilla.net
Tue Aug 11 01:43:56 UTC 2009


On Tue, 2009-08-11 at 00:43 +0200, Jens M Andreasen wrote:
> On Mon, 2009-08-10 at 17:40 -0400, David Robillard wrote:
> 
> > > Software is the free 'C for CUDA' compiler and SDK from Nvidia
> > 
> > Latency low enough to make realtime use feasible?
> 
> What I do is - imagining that I am a Jack client with near zero
> processing time - what I do is that I 'receive previous/send next/launch
> kernel' in one go. Current process is in principle a 192 voice Minimoog
> style polysynth with 4 external audio inputs + a ton of midi in. Mixdown
> to 16 stereo (midi)channels, further mixdown to 8 out (1 stereo 'house'
> + 3 stereo 'fx send') Sorting the dynamically assigned voices to their
> respective channels is currently the main bottleneck - or so it seems.
> 
> With buffersize 3 × 1.3 ms @96KHz I have clockcycles to spare and can at
> ease display a stream of video (320×200) simultaniosly for doing a
> soundtrack to some movie or something. And more ...

Interesting... I am surprised you can crunch DSP on these things with
this kind of latency at 96Khz.  48Khz should be a breeze then...

> The general hostility against non-GPL software is tougher though

Huh?  Are you using "non-GPL" here to mean "not open source"?

-dr





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