[sdiy] VCO control Range

[Scott Gravenhorst]

Synth-diy at dropmix.xs4all.nl wrote:
>"Laurie Biddulph" <elby_designs at ozemail.com.au> wrote:
>>But what about the link up with MIDI?
>>
>>MIDI starts at 0V and goes up from there. It doesn't support negative 
>>voltages. So if you set 0V to equate to MIDI Note 0 (8.176Hz) then you can 
>>only work with positive voltages.
>>
>>So we have our VCO set for 0V = 8Hz and then we connect a CV controller that 
>>has a range of -10 to +10V, what do we do with the negative voltages?
>
>Use a diode?  (c;
>

Ok, to be serious, I don't care whether oscillator frequencies obey some standard
frequencies based on MIDI note number.  If I send a MIDI note the gives voltage X, then if
I want to, I can sum -1.000 volts to drop the pitch an octave.  So while a particular MIDI
to CV device may not give voltages below zero, I can generate them as I need or see fit.

-- ScottG
________________________________________________________________________
-- Scott Gravenhorst
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