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Download Ath | OS-SE Waveguide | Gallery Ath - The generator of Advanced Transition HornsAth is an acoustic waveguide design tool and BEM mesh generator. By extending the work of Dr. Earl Geddes a new waveguide formula was developed, terminating what is known as the oblate spheroidal (OS) waveguide into a flat baffle. This perfectly smooth finite contour provides excellent performance of controlled directivity without any noticeable signs of diffraction or reflections. Create your own model and test it with BEM analysis using R&D Team's ABEC (*). Ath will generate all the necessary files for you with just a few keystrokes. Associated diyAudio threads: Theory & Design | Practicalities (*) Since ABEC changed to AKABAK in the meantime and there seem to be some compatibility issues, you may still want to use the old version of ABEC 3 until the issue is resolved. 
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