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 Forum index » DIY Hardware and Software
Preview Sample of the Thomas Henry SN76477 Voice
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mosc
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Joined: Jan 31, 2003
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PostPosted: Tue Jul 18, 2006 11:51 am    Post subject: Reply with quote  Mark this post and the followings unread

bigtex wrote:
Such a wonderful variety of sounds from just a few modules. Great stuff! Very Happy


Yes, it is impressive.

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bigtex



Joined: Mar 30, 2006
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Location: Cupertino, California

PostPosted: Tue Jul 18, 2006 11:55 am    Post subject: Reply with quote  Mark this post and the followings unread

So I must know, is this going to be a Magic Smoke produced board/module? Or will it be up to the DIYers to make their own boards? I still haven't actually found the parts bin that contains my two SN7677s, but when I do, I'll want to make two of this circuit right away. Such a great sound!
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Scott Stites
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PostPosted: Tue Jul 18, 2006 12:30 pm    Post subject: Reply with quote  Mark this post and the followings unread

Thanks guys! BigTex, I imagine the effect is just a combination of what the WaveMultiplier is doing in conjunction with the analog delay. Controlling it with the EG can give it a sort of pitch bend sort of sound. BTW, watching what the wave multiplier does on an oscilloscope can provide hours of fascination Very Happy

The first and third sample were just one track mono recordings - the SN-Voice was essentially providing two voices - the EG controlled PWM through the internal VCA of the Sn-Voice and the constant triangle wave modified by the wave multiplier. My filter has three signal inputs, each with a mix pot, and I was using two of them for the two voices. When I wanted the triangle modified by the wave multiplier, I'd just bring it up with the pot on the filter. The second sample obviously was several tracks, pretty much recorded at random.

That Tim Servo guy - watch out for him, he's one half of Magic Smoke Very Happy

Tim is going to design a PCB for the project. Whether Magic Smoke markets a PCB for it or not is up to Magic Smoke - they have Thomas' and my blessing. I can imagine that would be a tough decision - how do you determine a PCB run on a project based upon an IC that hasn't been in production for umpteen years?

The project itself is going to be free to the public. If anyone wants to design a PCB or vero layout, they're free to do so, it's just requested it not be done for commercial purposes without permission from either Thomas or myself.

You may be surprised at how few components it actually requires. I've got the circuit description finished for the web page, and I'm hoping to finish up some of the calibration details for it tonight (it's not all that hard to cal), and get it up and running ASAP. I've got some optional mods that I want to put up, but I'll get the crux of the deal up first and add that stuff later.

Besides, Tom's already plopped another cool design in my inbox (and is threatening more) and I want to get to that. But I gotta finish the webpage first.

Take care,
Scott
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State Machine
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PostPosted: Thu Jul 20, 2006 3:37 pm    Post subject: Reply with quote  Mark this post and the followings unread

Quote:
Sounds like good space music, to me. I like it. Such a wonderful variety of sounds from just a few modules. Great stuff! Very Happy

In that first one, I really like how the echoing notes increase in pitch sometimes. It makes a nice little melody and is a really amusing effect. Is that two tracks or is that live?


I agree with TEX !!! I really like the melody on the first sampling !! Catchy! Very "Raymond Scott" like ... the reverb gives it that early 60's experimental feel .... Very Happy
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