Binaural mask-informed speech enhancement for hearing aids with head tracking

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Title: Binaural mask-informed speech enhancement for hearing aids with head tracking
Author(s): Moore, AH
Lightburn, L
Xue, W
Naylor, P
Brookes, D
Item Type: Conference Paper
Abstract: An end-to-end speech enhancement system for hearing aids is pro- posed which seeks to improve the intelligibility of binaural speech in noise during head movement. The system uses a reference beam- former whose look direction is informed by knowledge of the head orientation and the a priori known direction of the desired source. From this a time-frequency mask is estimated using a deep neural network. The binaural signals are obtained using bilateral beam- formers followed by a classical minimum mean square error speech enhancer, modified to use the estimated mask as a speech presence probability prior. In simulated experiments, the improvement in a binaural intelligibility metric (DBSTOI) given by the proposed sys- tem relative to beamforming alone corresponds to an SNR improve- ment of 4 to 6 dB. Results also demonstrate the individual contribu- tions of incorporating the mask and the head orientation-aware beam steering to the proposed system.
Publication Date: 17-Sep-2018
Date of Acceptance: 23-Jul-2018
Publisher: IEEE
Journal / Book Title: International Workshop on Acoustic Signal Enhancement (IWAENC)
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/M026698/1
Conference Name: International Workshop on Acoustic Signal Enhancement (IWAENC 2018)
Copyright Statement: This paper is embargoed until publication.
Publication Status: Accepted
Start Date: 2018-09-17
Finish Date: 2018-09-21
Conference Place: Tokyo, Japan
Embargo Date: publication subject to indefinite embargo
Appears in Collections:Faculty of Engineering
Electrical and Electronic Engineering

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