@madskjeldgaard wow that's ruddy real. I've used #csound before - mainly for manipulating mono sounds into virtual-surround-space using the built in HRTF functions and delay lines. I was looking for something less 'clunky', & hoping puredata would be up my street - but I've not been able to get my head round it as yet. I'll check out Faust soon. Check on #ComposersDesktopProject. But last time I used that (Atari Falcon 030) it was an expensive package of discrete terminal apps, by T. Wishart.