Understanding the Vowel Filter

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christeck
Posts: 81
Joined: Sun Sep 21, 2014 9:13 am

Understanding the Vowel Filter

Post by christeck » Thu Feb 19, 2015 12:22 pm

The Vowel Filter didn't appear in any of my patches, since I do not understand what it does.

* An individual vowel emphasizes certain frequencies across the spectrum, which can be expressed by a set of band pass filters at fixed frequencies but different widths (aka »Q«). Great.
* The Vowel Filter allows to select from up to 5 Vowels, setting the according band pass filters. Great.
* Only one of the selected Vowel Bands can be active at a time, controlled (respectively cross faded) by the Cross Fade parameter. Great.
* Without the Cutoff and Resonance parameters set to reasonable values, modulating the X-fade parameter will not show the expected result. Head scratch.

So my question is: What do the cutoff and resonance parameter do concerning the Vowel filter?

John Bowen
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Posts: 1655
Joined: Sat Apr 07, 2007 3:00 am

Re: Understanding the Vowel Filter

Post by John Bowen » Thu Feb 19, 2015 1:07 pm

As you wrote, the ‘vowels’ are being created by a number of bandpass filters...then the resonance controls the peaks as usual, and the cutoff changes the overall relative initial settings of each bandpass.

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