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 Forum index » Clavia Nord Modular » G2 Building Blocks
two filters
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Tim Kleinert



Joined: Mar 12, 2004
Posts: 1038
Location: Zürich, Switzerland
Audio files: 6
G2 patch files: 213

PostPosted: Fri May 12, 2006 2:31 am    Post subject: two filters
Subject description: filthy filter and morphing filter
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As the title says, two DIY filters.

The "MorPhilter" is allows continuous dynamical morphing from 24dB-LP (-64) to 12/12dB-BP (0) to 24dB-HP (+64) characteristics. Nothing special otherwise, just an exercise with poles and phase relationships.

The "Filthy Filter" uses the Resonance Mod input of the NordFilter module to add odd harmonic distortion to the resonance. This is neat, cheap, and doesn't seem to need integrating mixers to stabilize the high frequencies -so the filter keyboard tracking remains intact too. But note that this only works properly when the filter gain control (GC) is turned off, and the filter type is set to LP. The 24/12dB option is available, though.

Also, since this circuit is compressive, it is input-sensitive. If you max out the resonance, but drive the filter input very hard, you'll won't get much of a resonance peak. Back the levels off a bit for more reso peak.

best,
tim


MorPhilter TK.pch2
 Description:
dynamic LP-BP-HP morphing filter

Download
 Filename:  MorPhilter TK.pch2
 Filesize:  1.48 KB
 Downloaded:  819 Time(s)


FilthyFilter TK.pch2
 Description:
filter with odd harmonic distortive resonance -"dirty" sound

Download
 Filename:  FilthyFilter TK.pch2
 Filesize:  1.96 KB
 Downloaded:  892 Time(s)


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cebec



Joined: Apr 19, 2004
Posts: 1064
Location: Virginia
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PostPosted: Fri May 12, 2006 7:57 pm    Post subject: Reply with quote  Mark this post and the followings unread

very nice, tim, thanks!
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