Robust spherical harmonic domain interpolation of spatially sampled array manifolds

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Title: Robust spherical harmonic domain interpolation of spatially sampled array manifolds
Authors: Moore, AH
Brookes, D
Naylor, PA
Item Type: Conference Paper
Abstract: Accurate interpolation of the array manifold is an important first step for the acoustic simulation of rapidly moving microphone ar- rays. Spherical harmonic domain interpolation has been proposed and well studied in the context of head-related transfer functions but has focussed on perceptual, rather than numerical, accuracy. In this paper we analyze the effect of measurement noise on spatial aliasing. Based on this analysis we propose a method for selecting the trunca- tion orders for the forward and reverse spherical Fourier transforms given only the noisy samples in such a way that the interpolation error is minimized. The proposed method achieves up to 1.7 dB im- provement over the baseline approach.
Issue Date: 5-Mar-2017
Date of Acceptance: 12-Dec-2016
URI: http://hdl.handle.net/10044/1/45035
ISSN: 1520-6149
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Journal / Book Title: IEEE International Conference on Acoustics Speech and Signal Processing
Copyright Statement: This paper is embargoed until publication.
Sponsor/Funder: Commission of the European Communities
Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: 609465
ep/m026698/1
Conference Name: IEEE International Conference on Acoustics Speech and Signal Processing
Publication Status: Accepted
Start Date: 2017-03-05
Finish Date: 2017-03-09
Conference Place: New Orleans
Embargo Date: publication subject to indefinite embargo
Appears in Collections:Faculty of Engineering
Electrical and Electronic Engineering



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