Title :
Representation of external ear transfer function via a beamforming model
Author :
Chen, Jiashu ; Van Veen, Barry ; Hecox, Kurt
Author_Institution :
Wisconsin Univ., Madison, WI, USA
Abstract :
The modeling of the behavior of the external ear with a beamformer is proposed. The output of a beamformer is a weighted combination of the data received at any array of spatially distributed sensors. The beamformer weights and array geometry determine its spatial and temporal filtering characteristics. A least squares procedure for choosing the weights so the beamformer response approximates the measured response of the external ear is described. The effectiveness of this model is demonstrated by designing a beamformer of several hundred weights which duplicates and interpolates the measured external ear response of a cat over broad ranges of frequency and direction
Keywords :
acoustic signal processing; ear; physiological models; transfer functions; array geometry; beamformer weights; beamforming model; cat; external ear transfer function; least squares procedure; measured response; response interpolation; sensor array; spatial filtering; spatially distributed sensors; temporal filtering; Aperture antennas; Array signal processing; Ear; Filtering; Finite impulse response filter; Frequency; Least squares approximation; Sensor arrays; Sensor phenomena and characterization; Transfer functions;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1991. ICASSP-91., 1991 International Conference on
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-0003-3
DOI :
10.1109/ICASSP.1991.151061
