AW: Doepfer Freq. Shifter

Haible Juergen Juergen.Haible at nbgm.siemens.de
Tue Oct 7 10:54:08 CEST 1997


	>Anyone who's looking for a reasonably priced frequency shifter
should check
	>out this link:
	>
> http://www.doepfer.de/a126.htm
	>
	>Good old Dieter's crankin' out lotsa good stuff.

Sorry, but I have to disagree.
"cheap stuff" would be the right word. May I quote
Doepfer's announcement: 

	"frequency shift can be controlled manual and with CV
       control input (with attenuator) from about 50Hz to 5kHz"

That's a joke, no? minimum frequency shift of 50 Hz ??
Ok, I don't really expect zero shift anymore, but 50 *milli*Hz
would have been right (and not too hard to implement).
Hey, and this module hasn't even got an external QVCO input,
so you're really stuck with these 50Hz.

I wonder what the bandwidth and phase accuracy of the 
hilbert transform approximation for the audio signal is ...
The announcement doesn't even *mention* it.

JH. 




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