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 Forum index » DIY Hardware and Software » YuSynth
Possible New Project--EMS VCS3 Trapezoid EG Clone
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camelneck



Joined: Sep 27, 2008
Posts: 68
Location: KY (USA)

PostPosted: Thu Mar 19, 2009 9:49 pm    Post subject: Possible New Project--EMS VCS3 Trapezoid EG Clone Reply with quote  Mark this post and the followings unread

Yves,
I'm currently in the process of building your EMS VCS3 VCF clone. I've always loved the sound of this filter especially for sound effects and I'm sure this module will bring me a step closer to producing some of those classic VCS3 sounds. However, since I only have conventional ADSR and AR EG's which cannot be looped, I will be limited as to which of the classic VCS3 sounds I can produce. (The EMS VCS3 had a special trapezoid EG with controls for attack time, on time, decay time, and off time, and it could be made to loop or recycle if so desired.)

Have you ever thought about designing a clone of this EG? It would make the ultimate companion for the VCS3 VCF as I mentioned earlier. I'm sure that a number of other people would also be interested in purchasing PCB's for this module if you were to design it.

I do remember seeing a schematic of the original EMS VCS3 EG somewhere on line not long ago and I'm 99% sure that all of the parts that were used by EMS for this EG are still readily available. (I think EMS began using BC-type transistors in the late 1970's to replace the original transistors, which are obsolete, and these replacement transistors are still readily available from what I remember.) I also think Juergen Haible built a pseudo clone of this module once upon a time.

David
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yusynth



Joined: Nov 24, 2005
Posts: 1234
Location: France

PostPosted: Fri Mar 20, 2009 12:36 am    Post subject: Reply with quote  Mark this post and the followings unread

No it is not in my plan to design a module based on the EMS trapezoid.
For looping modulation I use mostly LFOs and sometimes LFOs retriggering EGs.

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v-un-v
Janitor
Janitor


Joined: May 16, 2005
Posts: 8934
Location: Birmingham, England, UK
Audio files: 11
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PostPosted: Fri Mar 20, 2009 1:25 am    Post subject: Reply with quote  Mark this post and the followings unread

An EMS traperzoid generator clone? YES PLEASE!!! Very Happy Cool
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