2010/2/25 <fons@xxxxxxxxxxxxxxx>: > On Thu, Feb 25, 2010 at 06:30:02PM +0000, andy baxter wrote: > >> Hope this makes sense? Apparently it sounds like a never ending rising >> scale. > > It does. It works best if you use a dense set of notes moving > over a range of several octaves. With just one or a few the > fade-ins/outs at the start/end are quite apparent. > >> If anyone knows of a recording of this, I would be interested to hear >> it; if not I might have a go at making one. > > I once made such a thing, it's fairly easy using Csound > or similar. You just need a note that moves up (or down) > at a constant speed, with a fade-in at the start and a > fade-out at the end, then make it loop, then start a large > number of these at different positions in the cycle. There's also a rhythmic variant of Shepard tones called Risset accelerando. This page has supercollider code to generate one from a recorded beat, as well as an MP3 recording: http://swiki.hfbk-hamburg.de:8888/MusicTechnology/826 When I read the OP I thought of this since it's a kind of self-similar structure so might be thought of as fractal... Dan (Actually the code would probably do shepard tones as well as risset rhythms, if you just feed it a constant tone as audio input) _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
