[sdiy] lin to log envelope

[Peter Grenader]

If your envelope phases are VC'able, its cakewalk - output of envelope into
VC input.  If it's not, then well...you're going to have to do some cutting
and hacking to get it in there.







gregory zifcak wrote:

> hello,
> 
> i saw in the archives a reference to changing the shape of envelopes by
> feeding them back into themselves either positively or negatively. does this
> refer to the positive and negative inputs of the opamp?
> 
> my application is this:
> i have a simmons sds800 which uses cem3394 chips for osc-vcf-vca. according
> to the datasheet, the vcas are approximately exponential, allowing
> exponential volume shapes with a linear envelope. i am assuming that the
> simmons envelopes are linear or maybe even exponential, because they are not
> particularly punchy. i would like to make them logarithmic if possible in
> order to obtain punchy, linear dynamic response.
> 
> so basically my question comes down to where do i feed(back) the output of
> the envelope?
> 
> thanks for any info,
> 
> greg
> 
> _________________________________________________________________
> Page a contact’s mobile phone with MSN Messenger.  Get it  FREE!
> http://www.msnmessenger-download.com
>