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Development of a Finite Element Headphone Model

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For the development of high end headphones numerical simulation of headphone acoustics is an efficient tool. While discrete element models give good results for frequencies up to a few kilohertz finite element models are valid for higher frequencies too. A headphone model using finite elements and boundary elements was built in three phases both numerically and as a real world sample. The validity of the model was verified by comparison of both the radiated sound field and the membrane modal behaviour using a scanning laser vibrometer. Excellent agreement between measured and computed amplitude frequency responses was achieved.

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