[sdiy] "Living VCOs" PCB in 2009 ?

Simon Brouwer simon.oo.o at xs4all.nl
Wed Dec 10 12:19:32 CET 2008


"Linear" on that type of modulation input means that the frequency
deviation has a linear relation to the modulation voltage. *This deviation
is proportional to the unmodulated frequency*.

In contrast, Jürgens "linear detuning" control provides an independent
frequency offset.

So with the linear modulation input (if it is not AC coupled!), or with
the normal fine tuning control, you could get a frequency deviation of
e.g. 1 Hz but this deviation would be 2 Hz that when you play a note one
octave higher.

With the "linear detuning" you could set a 1 Hz deviation across the pitch
range. This way you can get a pleasant rate of beating between VCO's at
lower notes without them sounding too out of tune at higher notes.


Dave Manley schreef:
(...)
> Many expo VCO implementations include a linear modulation CV port, and
> so on to the next question: does the 'living' VCO do more than provide a
> knob to adjust the linear detune amount?

-- 
Vriendelijke groet,

Simon Brouwer
-*- nl.openoffice.org -*- http://www.opentaal.org -*-




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