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Simulated Diffuse Field Measurements

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The asymmetric polar response of an in-situ microphone system requires calculation of the Directivity Index (DI) from the random incidence response. A technique is presented that enables diffuse field measurements to be performed, without a reverb chamber, in a moderately sized, untreated room over a reasonably wide bandwidth. Applications of this technique are given and results for different devices are shown.

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