[sdiy] [synth-diy] integer sample period oscillator

[Scott Nordlund]

> Thank you for the demo. It sounds like the Axis Mutatis album by
> Shamen. I really love your sound. There's no aliasing that I can hear.
> There are inharmonic sounds, but I don't know if that's intended or if
> that's the aliasing you're talking about. I can't discern any
> aliasing. Would you mind playing a scale without aliasing, and then
> playing the same scale with slide or something like that? Best make
> the notes A 0 D 0 S 100% and just a tiny amount of release, and
> unfiltered, no effects.
> 
> Cheers,
> D.

The goal of this recording was to see how well it worked in a "real 
world" scenario. Anecdotally I can report that it does make a big 
difference. At one point while I was working on it, I wondered why 
everything sounded so terrible... it turned out that I had changed the 
sample rate from 48 kHz to 44.1 (or something like that) and hadn't re-initialized things to 
account for it. So it was constraining notes to the wrong frequencies and everything had terrible aliasing. 

I need to record some better examples and write something a that's little more clear, but I've been too involved in other stuff lately. Writing is the tedious part that comes after I've already had all the fun, so it's easy to put off indefinitely. The only other info I have on this for now is in a gearslutz thread, which includes some samples: http://www.gearslutz.com/board/electronic-music-instruments-electronic-music-production/826280-taxonomy-early-digital-synthesizers.html I don't think it's really satisfactory, but it's all I have at the moment. It covers the math and everything, at least.