[sdiy] monolithic VCO chips for FM??

[synthplayer88 at spymac.com]

On Sat Aug 21 15:16 , harrybissell <harrybissell at prodigy.net> sent:

>synthplayer88 at spymac.com wrote: 
>
>>
>> Well, the potentiometer per note approach would be a necessity if you were to use
>> those VCOs that does not work in pitch so you can tune each note on all the other
>> octaves where double or 1 volt DC increment won't get you double the
frequency.....
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>
>Actually, linear VCOs can have a keyboard with fixed resistors (Korg MS series
do just
>that)...
>
>the "pot per key" approach would be necessary only for those VCO that have totally
>unusable
>linearity... In the case of some exotic designs (like simple tube oscillators)
this might
>be the
>only way to go... but for solid state designs its not necessary.
>
>Since there are so many GOOD VCo designs that are stable over a wide range,
either linear
>or
>expo... why go the tough route ?
>
>If you want to experiment with micro-tunings... then the pot-per-key is a viable
>solution... but those would not be trimmers
>
>H^) harry
>
>


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