Hello to you. I'm building a simple electronic sound syntetizer. Basicly It consists of several coupled oscilators, each conected to a key on a key board, that connects the sound to a signal mixer (and amplifier) and finaly to the sound output. What I would want to accomplish is a fader effect on the key strokes, I mean, when you play a piano key and they take off your finger, the tone will keep going for a few seconds, fading away. OK so I know how to keep the tone active after you take of your finger (just add a simple Rc timer to keep the signal flowing) , but I dont know how to add the fade out effect. can you help? thank you.