[sdiy] super simple portamento / slide / glide / slew limiting circuit?

[Todd Sines]

okay.. got one of them? 

[a schematic of something would be nice, all the "simple circuits" I've seen are just descriptions.]


+odd
--
On Jul 13, 2011, at 12:28 PM, Scott Nordlund wrote:

> 
>> Trying to mod my Roland CMU-810 synth expander module for portamento / slide / glide / slew limiting over the CV input.
>> [and maybe audio in]
>> 
>> Anyone done this, or can suggest a proper portamento circuit that could be used to add to the input ..
>> 
>> The electro-music post suggests it'd be as simple as 3 components: a pot, a cap, and an op-amp... 
>> http://electro-music.com/forum/post-149264.html
> An RC circuit will give you an exponential portamento (constant time). It's possibly more of a "classic" sound, but it might be a little wonky sounding for longer portamento times, since it slows down and asymptotically approaches the destination pitch. A proper slew limiter (constant rate) might be better for general purpose use.