title: A bank of beamformers implementing a constant-amplitude panning law.
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 audio recording scenarios, a point source will appear with energy above a specified sidelobe level in at most two adjacent beams, and the sum of all beam signals will approximate the source signal. A design method is described in which a specified sidelobe level determines beamwidth as a function of arrival direction and frequency, leading directly to the number and placement of beams at each frequency. Simulation results are presented verifying the proposed technique's performance.
authors.affiliation: Center for Computer Research in Music and Acoustics, Music Department, Stanford University, Stanford, California 94305 yoomi@ccrma.stanford.edu, abel@ccrma.stanford.edu.
authors.forename: Yoomi
authors.initials: Y
authors.lastname: Hur
authors.affiliation: Center for Computer Research in Music and Acoustics, Music Department, Stanford University, Stanford, California 94305 yoomi@ccrma.stanford.edu, abel@ccrma.stanford.edu.
authors.forename: Jonathan S
authors.initials: JS
authors.lastname: Abel
authors.affiliation: Computer and Telecommunications Engineering Division, Yonsei University, Wonju, South Korea young00@yonsei.ac.kr.
authors.forename: Young-cheol
authors.initials: YC
authors.lastname: Park
authors.affiliation: DSP Laboratory, Department of Electrical and Electronic Engineering, Yonsei University, Seoul, South Korea dhyoun@yonsei.ac.kr.
authors.forename: Dae Hee
authors.initials: DH
authors.lastname: Youn