SV: Re: [sdiy] Hopf bifurcation VCOs (sine distortion)

[karl dalen]

--- Ian Fritz <ijfritz at earthlink.net> skrev:

> Here are some more results on the new QVCO.
> Distortion is low throughout the 20Hz - 10kHz range (second >harmonic 50dB 
> down).  This is all the frequency range I can measure going >through my 
sound card.

I wonder is this low? 
(relative what, well i dont know really!?)

Can it be improved? (asuming still using the LM13700).
 
Current figures looks similare to what some
modern 10-12bit DDS chips are capable of today!

KD