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A Method of Loudspeaker Directivity Prediction Based on Huygens-Fresnel Principle

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In accordance with the Huygens-Fresnel principle, the radiating device is simulated as an array of point sources in the aperture. The aperture complex pressure can be calculated by means of a model of wave propagation along the waveguide based on the Huygens-Fresnel principle or by means of approximating waveguide procedure using experimental polar data in a traditional form. The method predicts dispersion pattern at any distance with any needed resolution. Phase patterns as well as dispersion vs. distance relationship are demonstrated on samples. Proposed algorithms can be used in high-resolution simulators of loudspeakers and arrays. Results also point to another approach of measurements and presentation of dispersion data.

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