FW: [sdiy] AD/AR (was: AR Gen, sans the A)

[gregory zifcak]

oops, meant to send this to the list:

on a related note, i've been thinking about modifying the AR on my Arp Odyssey to switch to AD mode. anyone ever done this, or know of an AD/AR schematic i can look at for reference?

thanks,
greg

> Date: Sun, 11 Nov 2007 14:11:24 -0800
> From: tim.parkhurst at gmail.com
> To: lightburnx at yahoo.com
> Subject: Re: [sdiy] AR Gen, sans the A
> CC: synth-diy at dropmix.xs4all.nl
>
> Hey Kyle,
>
> I would probably try replacing the attack pot with a 1K resistor
> (rather than a short), as you would want to limit the current going
> through the steering diodes seen in most AR generators. Another trick
> you might try is simply differentiating and buffering a gate pulse,
> and adding a variable resistor to the differentiator (to allow varying
> the release time). Thomas Henry shows a circuit like this in the
> Electronic Drum Cookbook, and it works really well. I'll send you a
> picture of the schematic if you want.
>
> Tim (another trick) Servo
>
>
> On Nov 10, 2007 9:38 PM, Kyle Stephens  wrote:
>> Ahoy...
>>
>> I'm looking to make a release-only envelope - as the
>> subject says, an AR generator without the attack
>> component.
>>
>> Could I do this by taking an existing AR design and
>> shorting out the attack time pot, thus theoretically
>> making the attack time zero?
>>
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>
>
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