[sdiy] Moogey jitter

[mark verbos]

This low frequency noise that effects the reset comparator and the 
integrator slope would also effect the DC location of the saw wave from 
the core output , wouldn't it?

I noticed some "wavering" of my analog VCO waves and it gave me an idea 
a while back. I opened up Pro Tools and made some raw waves with the 
signal generator. Then, with the pencil tool, at a huge magnification, I 
drew in a randomly moving dc offset on another track. I then mixed the 
waves together, along with some of this red or brown noise. That didn't 
sound like anything at all. However, when I then ran that mixed signal 
through distortion, or waveshaping or some other effects these randomly 
varying DC offsets really added to the analog-ness of the sound. I don't 
know if it would qualify as "Moogy" but it did sound interesting. I also 
tried using triangle waves that I pitched down 4 or more octaves. This 
also had an interesting effect.

Mark





René Schmitz wrote:
> Hi Ian and all,
> 
> Ian Fritz wrote:
> 
>> Conclusion:  Any phase beating effects are going to occur over longer 
>> time scales due to drifting and wandering, not the bogus phase jitter 
>> that Kevin claims.
> 
> 
> Absolutely.
> 
> But there is a problem with denominations here. I'd call this frequency 
> fluctuations. Or like Magnus: wandering, quicker than drift, but slower 
> than jitter. (You might even think of drift and jitter being the same 
> thing, it merely depends on the timescales on which you observe.)
> And I don't see how small fluctuations of momentary frequency away from 
> the average frequency would not change the beating pattern. Provided the 
> frequency of these fluctuations is low enough, that an effect can 
> accumulate over these timescales (several seconds).
> Kenneth's sample is too short IMO to really be useful in analysing that.
> 
> Cheers,
>  René
>