[sdiy] Schmitz ADSR replace pots with CV control?

Jack Jackson jackdamery at hotmail.co.uk
Tue Nov 26 17:51:56 CET 2013


Yeh, I really think I should now. The design looks boss and I even went as far as buying PICs, a programmer and some crystals and programming them. I just never got round to building the Bessel filter. I do like the neatness of the 555 charging/discharging a cap though.

Jack


>> Date: Tue, 26 Nov 2013 08:55:39 -0500
>> From: jpdesroc at oricom.ca
>> To: synth-diy at dropmix.xs4all.nl
>> Subject: Re: [sdiy] Schmitz ADSR replace pots with CV control?
>>
>> Why don't you use Tom Wiltshire's Voltage controlled ADSR
>>
>> http://www.electricdruid.net/index.php?page=projects.envgen7
>>
>> Everything in its design can be voltage controlled !!!
>> I'm using 6 of them in my modular and its design is great !
>>
>> My 2 cents.
>>
>> JP
>>
>> Le 2013-11-26 08:37, Neil Johnson a écrit :
>>>>> http://www.sowa.synth.net/modular/vcaddsr.html
>>>>
>>>> Yes, but that's a completely different env gen design, compared to
>>>> Schmitz' 555-based one that was subject to CV-ification. :-)
>>>
>>> Yes, indeed, but by the time you add in all the bits to make the
>>> 555-based ADSR fully CVable you pretty much end up with something like
>>> Roman came up with. I merely show you what the destination looks
>>> like, you choose your own path to it! If you want to be closer to the
>>> original you could probably replace some of the comparators and
>>> flip-flops with a couple of 555s.
>>>
>>> Neil
>>> --
>>> http://www.njohnson.co.uk
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