AW:e: What means 'phaselocked'? (was: Re[3]: Fourier-Analysis

[Haible_Juergen#Tel2743]

>I play a Korg CX-3 organ, which uses the MK50240 top octave chip, and the
>equal tempered approximations do not seem quite the same or as accurate >as
>those in the Hammond organ. I have a data sheet with divisors used by the
>50240, but would like to know the various gear ratios used in the Hammond
>tonewheel organs. I posted this question to the Hammond list, but got no
>response.

If you should ever build a workaround for this effect into your CX-3,
please let me know!
I modded my CX-3 a lot, but this is something still missing. Perhaps
we'd need a higher master clock frequency and more accurate divider
circuits (PLL M/N circuits?).
Can anybody confirm that this is the main difference in frequencies
of Hammonds and a CX-3 ? I mean, if I would have the right 12
equally tempered top octave notes, everything else would be like
in the Hammond? I remember there is *very few* beating in the
CX-3 even with odd upper drawbars ....

>   On a related note to this thread, would be worth the trouble to take
>several stages of all-pass (phase shifter) filtering and modulate each 
stage
>with filtered and uncorrelated noise to simulate the slight unsteadiness in
>the tonewheel organs?

Maybe. But the problem above would be more important.
Given the top octave would be generated with M/N PLLs, we could
even modulate the PLL-VCOs directly.

JH.