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 Forum index » DIY Hardware and Software
my new dynamics unit
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zipzap



Joined: Nov 22, 2005
Posts: 559
Location: germany
Audio files: 24

PostPosted: Sun Nov 11, 2007 7:26 am    Post subject: my new dynamics unit Reply with quote  Mark this post and the followings unread

Hi together.
I spent some time building myself an analog dynamics unit (and therefor haven´t been around here much...). It uses a diode and a pentode VCA that can be switched to compress or expand, has lots of routing choices for audio and cv, independant filtering for audio and sidechain, sidechain clipping and a mixer to add or substract different signals.
Attack and Release can be set independant for each VCA with linear or expotential responce. Timing can be adjusted down to 0. Just wondering what you think of the sounds. It´s more an effects unit than those compressors you´re not supposed to "hear".
So lots of pumping and distortion is possible. Works best on drums...
the sample "stereo" uses the independant outs of the two vcas and a mixing desc. Filter+Time has some sounds using the signal filter and distortion with very short timing constants.
They all show a dry loop first, followed by some processed samples.
add-substract conists of the original, than the processed signal, than the two added, than the two substracted.

Sorry, no shematics, but maybe i should draw some. Hope i remember the parts i used. Guess i don´t work very professionally...
But the functions i described is basically what is going on, so of course any vca and filters can be used.


add-substract.mp3
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 Filename:  add-substract.mp3
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filter+time.mp3
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 Filename:  filter+time.mp3
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stereo.mp3
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 Filename:  stereo.mp3
 Filesize:  1.32 MB
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StephenGiles



Joined: Apr 17, 2006
Posts: 481
Location: England

PostPosted: Sun Nov 11, 2007 9:39 am    Post subject: Reply with quote  Mark this post and the followings unread

Hey Zipzap that sounds like what I would call "compressed to buggery" so backs to the wall eh! I think you have a wonderful unit there and if you can find the time to draw and at some time post the schematic, I for one would be very grateful.
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23isgood



Joined: Nov 18, 2006
Posts: 236
Location: San Francisco, CA bay area
Audio files: 13

PostPosted: Mon Nov 12, 2007 12:00 am    Post subject: Reply with quote  Mark this post and the followings unread

Great sounds. I really like the stereo bass sample. Its nice when the sound fades in like that. Cool stuff fer sure!

pete

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goldenechos



Joined: Jun 06, 2007
Posts: 201
Location: Marshall, NC
Audio files: 1

PostPosted: Fri Nov 16, 2007 5:53 pm    Post subject: Reply with quote  Mark this post and the followings unread

I wold love to see how you did this... a diode and pentode VCA??? I have seen Diode VCA and I have seen Pentode VCA... are you combining the two???

In any case, these sounds are really cool!


Tony
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shawn



Joined: Dec 13, 2005
Posts: 209
Location: savannah

PostPosted: Fri Nov 16, 2007 7:19 pm    Post subject: Reply with quote  Mark this post and the followings unread

This is a no brainer, I'd love to see this!
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Tim Servo



Joined: Jul 16, 2006
Posts: 924
Location: Silicon Valley
Audio files: 11

PostPosted: Fri Nov 16, 2007 9:30 pm    Post subject: my new dynamics unit Reply with quote  Mark this post and the followings unread

Neat! That is quite the sound mangler! What sort of power supplies are involved?


Tim (music mangler) Servo
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