[sdiy] simple and effective ADSR circuit using ICs

[Andreas Gaunitz]

In that case you could just build a standard gate controlled VCA and 
put a 555 before it.
- The 555 would output a +5 gate as soon as the state on its input goes 
from low to high
- The gate would last for, say, 100 ms

regards
-Andreas


2005 jan 10  kl. 05.26 skrev <synthplayer88 at spymac.com>:

> I think I left out a very important piece of detail, that is I would 
> like to use
> this EG to be triggered from an audio source eg. music CDs not a 5v 
> pulse from
> the keyboard.
>
> Which I am just wondering if anyone has tried triggering with an audio 
> source and
> happy with the results?
>
> Thanks!
>
> regards,
> Scott
>
> On Thu Jan  6  6:50 , MikaelMørup <Mikael at mikmo.dk> sent:
>
>
>>
>> Ray Wilson's ADSR circuit only has 1 transistor in it
>>
>> http://www.musicfromouterspace.com/analogsynth/norgate_adsr_001.html>
>>
>> Mikael
>>
>
>