[sdiy] Where's Portamento?

[Seb Francis]

Different portamento times for different VCOs is indeed a cool thing.

My Fat Controller MIDI->CV supports this, although again it's not built 
into the VCO.  You can have 3 different CV outputs for a monophonic 
patch, and each of the 3 CVs can have different portamento times (and 
different pitch bend and octave shift amounts as well).

Seb


Charles Bisaillon wrote:
> Ok then I'll find it. Thx
>
> But I have to say that different portamento times for different VCO is a
> really cool thing. I have experimented with it many times on my Vermona
> MARS, it has 2 VCO with individual portamento. Check it out.
> http://www.vermona.com/en/produkte/mars/mars.html?id=77&page=1
>
> Charles
>
>  
>
>   
>> Portamento is usually part of the keyboard or the control voltage soure. In
>> order for several VCOs to track when used together, they would need to use a
>> common portamento circuit, so that makes putting it in the VCO less than
>> optimal.
>>
>> The circuits are often called "slope", "slew", "lag" or similar. They are
>> out there.
>>
>> Ken
>>
>>     
>>> So I'm in charge of the VCO for our modular capstone project. I've read
>>> through the sections in Barry Klein's book and in the preferred circuit
>>> collection (EN). I get the concept of oscillator and all the building blocks
>>> involved. Most VCO circuits have similar features that are desirable but I
>>> wasn't able to find portamento. In my unexperienced opinion, I can't imagine
>>> it would be hard to implement such a function on the VCO. So why wasn't it
>>> popular? Was it part of another module patching into CVin?
>>>
>>> Thanks
>>>
>>> Charles
>>>
>>>
>>>       
>> _______________________________________________________________________
>> Ken Stone   sasami at hotkey.net.au
>> Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
>> Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
>>
>>     
>
>
> http://www.oveloe.com
> Voltage-Controlled Brain Waves
>
>
>
>