[sdiy] DCO drift test

[ASSI]

On Monday 07 June 2004 18:40, Antti Huovilainen wrote:
> I did a little simulation of VCO drift with digital oscillators in
> Matlab. One set is normal (alias free) digital oscillator with
> constant tuning, other uses drift recorded from Pro-One.

I really think that this discussion would make more sense if we started 
talking about multiple oscillators. I hope everyone agrees that a pure 
sine oscillator doesn't have any sound character on it's own, but it 
doesn't take more than a few attempts at two-operator FM patches to 
hear that there's a difference between a DCO and a VCO. The thing with 
the "sound" of a DCO versus a VCO at other waveshapes IMHO is that the 
DCO is predictable and repeatable across multiple oscillators and 
invocations unless you specifically provide for randomization. Even 
then the quantization can produce easily discernible patterns in the 
beating between two or more oscillators.


Achim.
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