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Engineering Brief

Direction Of Arrival estimation for acoustical sources using noise signals and a Uniform Circular Array

Authors: Simon, Yohann; Heeb, Thierry

AES Convention 150 · Paper 639 · May 2021

Abstract

This paper describes an effective and fast solution for estimating speaker direction of arrival in 3D space. The main idea is to use noise as an excitation signal for sources and to determine time of arrivals from recordings of 3D space distributed microphones. Up-sampling and interpolation are applied to improve times of arrivals estimation, which are then used to construct sinusoidal signals. Sine phases are determined from times of arrival estimations and the frequency is optimised from the physical sensors’ structure. Hence, speaker direction are predicted by beamforming and direction of arrival algorithms with a precision of two degrees in azimuth and five in elevation.

Details

Published in
AES Convention 150
AES Convention
150
Paper number
639
Publication date
May 6, 2021
Session subject
Acoustic Measurement
Affiliation
Storm Audio, Saint Héblain,France; SUPSI-ISIN,Lugano-Viganello, Switzerland (See document for exact affiliation information.)
Type
Engineering Brief