title: Parameterization of the three-dimensional room transfer function in horizontal plane.
abstract: This letter proposes an efficient parameterization of the three-dimensional room transfer function (RTF) which is robust for the position variations of source and receiver in respective horizontal planes. Based on azimuth harmonic analysis, the proposed method exploits the underlying properties of the associated Legendre functions to remove a portion of the spherical harmonic coefficients of RTF which have no contribution in the horizontal plane. This reduction leads to a flexible measuring-point structure consisting of practical concentric circular arrays to extract horizontal plane RTF coefficients. The accuracy of the above parameterization is verified through numerical simulations.
authors.affiliation: Speech and Audio Signal Processing Laboratory, School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China bubing@emails.bjut.edu.cn.
authors.forename: Bing
authors.initials: B
authors.lastname: Bu
authors.affiliation: Applied Signal Processing Group, Research School of Engineering, College of Engineering and Computer Science, The Australian National University, Canberra, Australian Capital Territory 0200, Australia thushara.abhayapala@anu.edu.au.
authors.forename: Thushara D
authors.initials: TD
authors.lastname: Abhayapala
authors.affiliation: Speech and Audio Signal Processing Laboratory, School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing 100124, China baochch@bjut.edu.cn.
authors.forename: Chang-chun
authors.initials: CC
authors.lastname: Bao
authors.affiliation: Applied Signal Processing Group, Research School of Engineering, College of Engineering and Computer Science, The Australian National University, Canberra, Australian Capital Territory 0200, Australia wen.zhang@anu.edu.au.
authors.forename: Wen
authors.initials: W
authors.lastname: Zhang
mesh_terms: D000162:Acoustics; D003198:Computer Simulation; D005160:Facility Design and Construction / Q000379:methods*; D008962:Models, Theoretical; D009038:Motion; D009716:Numerical Analysis, Computer-Assisted; D012815:Signal Processing, Computer-Assisted; D013016:Sound; D013018:Sound Spectrography; D013997:Time Factors