[sdiy] Philip Gallo Lin/Expo SSM2164 VCA design

[Neil Johnson]

Hi Tom,

> Secondly, are there published designs that use the SSM2164 to  
> create a VCA with *both* lin and expo CV inputs? If not, I think we  
> should get busy and make one!

Google shows:

http://www.sdiy.org/philgallo/mgbvca.html

http://www.emulatorarchive.com/Amplifiers/AM8164/am8164.html

http://m.bareille.free.fr/modular1/quadvca/quadvca.htm

When you say "..*both*.." do you mean "at the same time", or do you  
mean "can select either/or".

The ones above all have switchable lin/expo, so you can't have lin  
and expo at the same time.

Cheers,
Neil
--
http://www.njohnson.co.uk