Stefano D'Angelo wrote: > Il giorno gio, 07/06/2007 alle 09.20 +0200, Robin Gareus ha scritto: >> Stefano D'Angelo wrote: >> >>> Hi, >>> I read on spicy sound website: "However todays computing power allows to >>> do so almost in real-time!"... do you think you'll get it real-time? >> no, not any more. >> >> Without oversampling, small circuits run /almost/ in real-time. However >> the posted 3 seconds of guitar took almost 4 mins to be processed with >> ngSpice simulating at 1s/(64*48k) timesteps. > > 4 mins? OMG! :-\
indeed - at least it scales linearly with decreasing timesteps ;) - for guitar a *8 or *16 oversampling is sufficient. ngSpice is clearly is not suitable to be used as audio-effect; yet it's handy to test&debug audio-circuits, or even create convolution samples. Does anyone here have access to the full version of http://www.acusticaudio.com/modules.php?name=Products&file=nebula2free VST plugin? - It would be interesting to know if ngSpice-snd samples can be used to program it. nudged by Erik at http://linuxaudio.org/pipermail/linux-audio-user/2007-May/045899.html I've Taylor-expanded a convolution integral, and started to look for some papers. The maths is not too wicked after all; but coding a volterra transfer function best with CPU optimization is no laughing matter.. - I've chatted with a physicist friend who has access to some pro-maths software to crunch integrals and product series and experience doing so - I'm gonna spend a few weeks with Florian during the summer and 'll get back to you guys. ATM my ToDo list is way too overloaded and just glimpsing at bruteFIR or aliki: this is no small project either! robin _______________________________________________ Linux-audio-dev mailing list Linux-audio-dev@lists.linuxaudio.org http://lists.linuxaudio.org/mailman/listinfo.cgi/linux-audio-dev