Note: this post is from 2007, outbound links may be broken.

xoxos releases fauna

Related: , , , , Posted in news on Dec 24, 2007 - comment 4 comments
xoxos fauna

xoxos has released fauna, a VSTi which emulates animal vocalisations by inducing oscillation as a function of structure instead of processing a source oscillator.

fauna is an elementary application of the kelly-lochbaum tract in conjunction with a simple reed model.

The kelly-lochbaum vocal tract employs a series of coefficients representing open area of the vocal tract to compute transmission.

The length of the tract is divided into five sections, or waveguides. these waveguides function as conventional delays set to very short times to model the acoustic transmission through air.

xoxos explains fauna with a pretty illustration.

xoxos fauna diagram

The low waveguide count allows a variety of animal sounds to be mimiced to some degree at a low cpu expenditure.

The glottis functions as a valve, opening with pressure from the lungs and closing with pressure returning from the mouth. The smaller the aperture, the higher the reflection.

The throat of the tract is tapped separately and passed through a resonant low pass filter to add throat or body resonances. These are key components of some tones. The signal at the throat is generally less detailed than the mouth output.

The final stage of the signal chain is a 6db high pass filter, which can indicate size and proximity of the source.

fauna is freeware and can be downloaded here.

2008-02-06: Fauna is now released as donationware. A demo version is available for download (demo has 16 patches, paid version has 107).

More info here.

  • anton

    Current release crashes…

  • http://rekkerd.org ronnie

    Which host are you using Anton?

  • anton

    Tried under VST-minihost and Nuendo3 on different PC’s.

  • http://rekkerd.org ronnie

    Fauna is now donationware. A demo version is available for download.

Rob Papen Blade

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