Binaural mask-informed speech enhancement for hearing aids with head tracking
File(s)PID5485301.pdf (218.56 KB)
Accepted version
Author(s)
Moore, AH
Lightburn, L
Xue, W
Naylor, P
Brookes, D
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.
Date Issued
2018-11-05
Date Acceptance
2018-07-23
Publisher
IEEE
Start Page
461
End Page
465
Journal / Book Title
International Workshop on Acoustic Signal Enhancement (IWAENC)
Copyright Statement
© 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Grant Number
EP/M026698/1
Source
International Workshop on Acoustic Signal Enhancement (IWAENC 2018)
Subjects
Science & Technology
Technology
Automation & Control Systems
Engineering, Electrical & Electronic
Engineering
Beamforming
Speech enhancement
Time-frequency mask
Assisted listening
Head rotation
INTELLIGIBILITY
Publication Status
Published
Start Date
2018-09-17
Finish Date
2018-09-21
Coverage Spatial
Tokyo, Japan
Date Publish Online
2018-11-05