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Convention Paper

A Set of Microphone Array Beamformers Implementing a Constant-Amplitude Panning Law

Authors: Abel, Jonathan S.; Hur, Yoomi; Park, Young-cheol; Youn, Dae Hee

AES Convention 129 · Paper 8280 · November 2010

Abstract

This paper describes a technique for designing a collection of beamformers, a "beamformer bank," that approximately produces a constant-amplitude panning law. Useful in multichannel recording scenarios, a point source will appear with energy above a specified sidelobe level in at most two adjacent beams, and the beam sum will approximate the source signal. A non-parametric design method is described in which a specified sidelobe level determines beam width as a function of arrival direction and frequency, leading directly to the number and placement of beams at every frequency. Simulation results using several microphone array configurations are reported to verify the performance of proposed technique.

Details

Published in
AES Convention 129
AES Convention
129
Paper number
8280
Publication date
November 6, 2010
Session subject
Spatial Sound Processing
Affiliation
Stanford University, Stanford, CA, USA; Yonsei University, Seoul, Korea; Yonsei University, Wonju, Korea (See document for exact affiliation information.)
Type
Convention Paper