Heya, Frank Barknecht wrote: Interesting! I'll definitely not go for an ARM-powered expander! Let me explain the facts, what I should have done from the beginning: I'm planning to build a special controller based on the Theremin, with MIDI and/or CV outs. All material released for free: schematics, software... The Theremin does have a trademark sound, even if most think it's a pure sine wave; but the aforementionned controller won't reduce itself to this: I'm more interested in its sensing technology. Yet, I was wondering if an built-in expander was needed in addition, for live use; or if it could simply rely on a computer (my use). Hence my idea to use a kinda port of PureData to DSP so that the user could get the same sound either from hardware or software means, just by dumping patches; instead of having to write a separate pure C/C++ DSP source code with specific non-compliant patches, or even having to advice proprietary synth expander to the prospective users. But what I do not want to do is building myself another computer... I thought DSP-powered expanders had one big advantage over PC-based expanders: the lack of crashes... Trick or treat? What's your opinion? Cheers, Mr°Freeze