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 Forum index » Instruments and Equipment » WREN
Moog 4 pole transistor ladder VCF
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Wobble



Joined: Feb 11, 2017
Posts: 70
Location: Denmark
Audio files: 1

PostPosted: Thu Feb 16, 2017 7:04 am    Post subject: Moog 4 pole transistor ladder VCF
Subject description: Feature request
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Is there already a module that imitates the classic Moog lowpass?

If not, I would like to make a feature request for one. I found this simple implementation (its GPL):

https://github.com/ddiakopoulos/MoogLadders/blob/master/src/HuovilainenModel.h

I found it from here: https://github.com/ddiakopoulos/MoogLadders
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Blue Hell
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Joined: Apr 03, 2004
Posts: 23018
Location: The Netherlands, Enschede
Audio files: 243
G2 patch files: 319

PostPosted: Thu Feb 16, 2017 11:40 am    Post subject: Reply with quote  Mark this post and the followings unread

Will have a look when I find some time, thanks :-)
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Jan
also .. could someone please turn down the thermostat a bit.
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Blue Hell
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Location: The Netherlands, Enschede
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G2 patch files: 319

PostPosted: Fri Feb 17, 2017 3:51 pm    Post subject: Reply with quote  Mark this post and the followings unread

That's actually quite a nice filter .. a bit rough here and there so had to tame it a bit to keep it from exploding ... will attach a recorded sample .. with a tad of reverb added.

But its not a cheap filter - CPU wise. Oh and it has some aliasing when it self oscillates ... maybe I'll change things a bit more .. dunno .. I like it rough too.

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moogsample.mp3
 Description:
sample of Wren proto moog style filter

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 Filename:  moogsample.mp3
 Filesize:  451.02 KB
 Downloaded:  922 Time(s)


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Jan
also .. could someone please turn down the thermostat a bit.
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Wobble



Joined: Feb 11, 2017
Posts: 70
Location: Denmark
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PostPosted: Fri Feb 17, 2017 6:38 pm    Post subject: Reply with quote  Mark this post and the followings unread

Ah, that a shame about the CPU, cause I would like to use many of them.

Your sample sounds good.

Looking forward to trying it. Smile
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Wobble



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PostPosted: Sun Feb 26, 2017 9:16 pm    Post subject: Reply with quote  Mark this post and the followings unread

From my initial experience playing around with the MoogFilter, I like it.

Is it a 12DB/Octave?

And great release, nice fixes and new modules to play around with. Smile
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Blue Hell
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PostPosted: Mon Feb 27, 2017 2:26 am    Post subject: Reply with quote  Mark this post and the followings unread

I thought 24 dB/Oct as its a four pole low pass.
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Jan
also .. could someone please turn down the thermostat a bit.
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Wobble



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PostPosted: Mon Feb 27, 2017 5:33 am    Post subject: Reply with quote  Mark this post and the followings unread

I think the tooltip say 12 DB.
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Blue Hell
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PostPosted: Mon Feb 27, 2017 6:37 am    Post subject: Reply with quote  Mark this post and the followings unread

That needs a change then Laughing
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Jan
also .. could someone please turn down the thermostat a bit.
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Blue Hell
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Location: The Netherlands, Enschede
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G2 patch files: 319

PostPosted: Mon Feb 27, 2017 3:05 pm    Post subject: Reply with quote  Mark this post and the followings unread

Changed a handful of other wrong ones as well.
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Jan
also .. could someone please turn down the thermostat a bit.
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