[PD] Simple Subtractive Synth filter envelope

[samuel rowe]

Hi

I'm relatively new to PD, but I've been working with hardware synthesizers for years now, and I've used SynC to build synths on my computer, and I'm doing an Audio Technology degree, so I'm not clueless on the subject. 
However, I'm trying to build a simple subtractive synth where I press a PutBang which triggers an envelope generator with ADSR to alter the filter cutoff, and I just can't work out how to do it. No-one at my university program in pd or max, so I have had to search the internet for help. I've read these two pages

http://obiwannabe.co.uk/html/music/6SS/six-simple-synthesisers.html
http://en.flossmanuals.net/PureData/SimpleSynth

and whilst the vline object on the flossmanuals site is fine when altering the envelope of an overtone in an additive synth, the output will not feed into the argument for a filter cutoff value. I can't even get the "attack decay" generator on the first site to work, let alone figure out how to alter it's seemingly inefficient design to allow sustain and release.

I know this is quite trivial compared to some of the things that get posted in the mailing list, I would really appreciate it if anyone could help me, or point me in the right direction. I've spent too many nights scouring the internet and trying to work it out for myself, but I've simply hit a brick wall.

Thank you in advance

Samuel

p.s. this is the text for the file i have been working on, it's a little bit messy and doesn't seem to work properly. BE CAREFUL, IT MAKES A THUMP WHEN OPENED, TURN OFF "COMPUTE AUDIO"

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