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 Forum index » DIY Hardware and Software » MusicFromOuterSpace.com designs by Ray Wilson
ADSR module
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oozitron



Joined: Apr 02, 2007
Posts: 35
Location: USA

PostPosted: Mon Apr 02, 2007 11:53 am    Post subject: ADSR module Reply with quote  Mark this post and the followings unread

I would like to build some ADSR modules using sliders (linear travel pots) for the four stage controls. However, the sliders I like best only go up to 100K (the instructions call for 1M on the A, D and R stages).

I'm guessing that 100K sliders would limit the range (times) of these controls. Would they be limited to 10% of what the 1M sliders would give me? (since 100K is 10% of 1M)

Is there another component on the PCB that could be substituted (resistors maybe?) which would extend the range of the 100K sliders?

thanks :)
Andrew
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v-un-v
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Joined: May 16, 2005
Posts: 8932
Location: Birmingham, England, UK
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PostPosted: Mon Apr 02, 2007 12:28 pm    Post subject: Reply with quote  Mark this post and the followings unread

hey welcome to electro-music Andrew Very Happy

Oozitron? hehe Love the name! Very Happy

Envelope shaper? 1M?? I don't dare open my mouth incase the great Blue Hell cometh down upon my shoulders!!

Laughing

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ian-s



Joined: Apr 01, 2004
Posts: 2575
Location: Auckland, New Zealand
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PostPosted: Mon Apr 02, 2007 12:42 pm    Post subject: Re: ADSR module Reply with quote  Mark this post and the followings unread

oozitron wrote:
I'm guessing that 100K sliders would limit the range (times) of these controls. Would they be limited to 10% of what the 1M sliders would give me? (since 100K is 10% of 1M)


Yes

If you have to use those sliders then you should look for a VCADSR design. The slider values wont matter for those because they are just wired as voltage dividers.

There are a few designs around but this one looks interesting. Uses a PIC to emulate a CEM3312/SSM2056 Very Happy
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sohcahtoa



Joined: Aug 12, 2006
Posts: 55
Location: Fargo, ND

PostPosted: Thu Apr 12, 2007 12:15 pm    Post subject: Reply with quote  Mark this post and the followings unread

That ADSR looks awesome thanks for the link.
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