Transfer functions of acoustical systems usually include significant phase lag due to propagation delay. When this delay varies from one transfer function to another, basic mathematical operations such as averaging and interpolation produce unusable results. A calculation method is presented which produces much better results, using well-known mathematical operations. Applications of the technique include loudspeaker complex directional response characterization, complex averaging, and DSP filter design for loudspeaker steering.

Author: Gunness, David W.
Affiliation: Eastern Acoustic Works, Inc., Whitinsville, MA
AES Convention: 111 (November 2001) Paper Number: 5440
Publication Date: November 1, 2001
Session Subject: Loudspeakers; Watermarking

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