[sdiy] Henry Walmsley's page

[JH.]

>The problem with super low resolution waveforms, in my opinion, is
>
>that they can be too buzzy with very limited control of harmonics.
>
>They do have a nice gritty timbre, but too often can sound rather
>
>samey. 32 or more points might be better, but it's not as easy to
>
>control. I guess waveforms that are some non-power-of-two
>
>number of points might have more interesting upper harmonics...



As a shameless self-advertising, I'd like to bring up my Inperpolating Scanner here, set to waveshaper mode.
You can "draw" transfer functions with sliders, and with a triangle signal for an input, it's basically the same as drawing 
waveforms. But the individual points are connected with linear segments (not staircases), so it's less gritty than a staircase 
approach would be. In my implementation, the number of points is limited to 9, but the good part is that you can choose any number 
from 2 to 9, depending on the input level of the triangle signal, so you can get "unusual" harmonics, *and* you can change them 
dynamically by just modulating the input level of the triangle signal.

I know most people buy these PCBs for other applications (well, scanning and crossfading), but that piecewise-linear-drawn waveform 
stuff is a very interesting application of its own.

http://www.jhaible.de/interpolating_scanner_and_scanvib/jh_interpolating_scanner_and_scanvib.html

JH.