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Development of a Finite Element Headphone Model

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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