External ear transfer function modeling: a beamforming approach.

J Chen; B D Van Veen; K E Hecox

doi:10.1121/1.405241

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External ear transfer function modeling: a beamforming approach.

J Chen·B D Van Veen·K E Hecox

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Abstract

In this article, a beamformer is proposed as a functional model for the spatial and temporal filtering characteristics of the external ear. The output of a beamformer is a weighted combination of the data received at an array of spatially distributed sensors. The beamformer weights and array geometry determine its spatial and temporal filtering characteristics. A procedure is described for choosing the weights to minimize the mean-squared error between the beamformer response and the measured response of the external ear. The effectiveness of the model is demonstrated by designing a beamformer of several hundred weights that duplicates and interpolates the measured external ear response of a cat over broad ranges of frequency and direction. A limited investigation of modeling performance as a function of array geometry is reported.

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Animals Cats Dominance, Cerebral Ear Canal Ear, External Models, Theoretical Pitch Discrimination Psychoacoustics Sound Localization Journal Article Research Support, U.S. Gov't, P.H.S.

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J Chen, B D Van Veen, K E Hecox. 1992. External ear transfer function modeling: a beamforming approach.. https://doi.org/10.1121/1.405241

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