Ah, that (the RMI using Walsh functions) sounds familiar...I remember Bernie Hutchins (Electronotes) did some articles back in the 70's on Walsh functions...it also reminds me of having fun back in the 70's when I figured out I could run my analog sequencers at audio rates and get some cool tones twiddling the knobs...
Do you have any refs to the RMI? I think I happened upon a patent doc that might have been that the other night, I'd have to dig it up again and look. On Jan 9, 2012, at 8:58 AM, Scott Nordlund wrote: > >> I looked at it a bit, and it's a lot to juggle, looking at diffs and the >> back and forth. Maybe it's just getting late, and I played a lot of >> basketball earlier, but the final thing that told me "it's bed time" was, in >> skimming the article, "Its [RMI] waveforms were calculated beforehand on >> non-realtime, and individual harmonics and harmonic envelopes couldn't be >> changed in realtime, by means of additive synthesis." Ouch. > > The thing that bugs me about the RMI Harmonic Synthesizer part is that I've > seen the schematic. It doesn't do that (though the Keyboard Computer models > probably do). The Harmonic Synthesizer uses Walsh functions. Resistor > networks mix the individual Walsh components for each of the harmonic sliders. > It may just muddy the issue further, but Ralph Deutsch is an important name > in this field. > Oh god, there are so many things wrong... > -- dupswapdrop -- the music-dsp mailing list and website: subscription info, FAQ, source code archive, list archive, book reviews, dsp links http://music.columbia.edu/cmc/music-dsp http://music.columbia.edu/mailman/listinfo/music-dsp
