[sdiy] Synthex Oscillator

[Tom Wiltshire]

On 8 Jul 2017, at 11:18, Gordonjcp <gordonjcp at gjcp.net> wrote:

> In the Synthex's case, that's exactly what we're doing - we're
> generating a sawtooth that fits exactly into 256 cycles of the sample
> rate and bringing the sample rate down to suit where we want the final
> note pitch.  The oscillator cannot alias, or rather it can but the
> aliases land exactly on partials that we already have below Nyquist.


Yes, exactly. I prefer to think of this as "harmonic distortion" rather than "aliasing", but I agree it comes from the same place.

The point it that you won't hear it, and you won't get that distinctive pitches-sliding-down sound you get as the note frequency goes higher.

Tom