Speaker tracking in reverberant environments using multiple detections of arrival

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Title: Speaker tracking in reverberant environments using multiple detections of arrival
Authors: Evers, C
Rafaely, B
Naylor, PA
Item Type: Conference Paper
Abstract: Accurate estimation of the Direction of Arrival (DOA) of a sound source is an important prerequisite for a wide range of acoustic sig- nal processing applications. However, in enclosed environments, early reflections and late reverberation often lead to localization er- rors. Recent work demonstrated that improved robustness against reverberation can be achieved by clustering only the DOAs from direct-path bins in the short-term Fourier transform of a speech sig- nal of several seconds duration from a static talker. Nevertheless, for moving talkers, short blocks of at most several hundred milliseconds are required to capture the spatio-temporal variation of the source direction. Processing of short blocks of data in reverberant envi- ronment can lead to clusters whose centroids correspond to spuri- ous DOAs away from the source direction. We therefore propose in this paper a novel multi-detection source tracking approach that es- timates the smoothed trajectory of the source DOAs. Results for re- alistic room simulations validate the proposed approach and demon- strate significant improvements in estimation accuracy compared to single-detection tracking.
Issue Date: 1-Mar-2017
Date of Acceptance: 24-Jan-2017
URI: http://hdl.handle.net/10044/1/44901
Publisher: IEEE
Journal / Book Title: Hands-free Speech Communication and Microphone Arrays
Copyright Statement: This paper is embargoed until publication.
Sponsor/Funder: Commission of the European Communities
Funder's Grant Number: 609465
Conference Name: HSCMA 2017
Publication Status: Accepted
Start Date: 2017-03-01
Finish Date: 2017-03-03
Conference Place: San Francisco, CA
Embargo Date: publication subject to indefinite embargo
Appears in Collections:Faculty of Engineering
Electrical and Electronic Engineering

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