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Low-cost hardware speech enhancement for improved speech recognition in automotive environments

Whittington, J., Ye, H., Kamalakannan, K., Vu, N.V., Mason, M.W., Kleinschmidt, T., & Sridharan, S. (2010) Low-cost hardware speech enhancement for improved speech recognition in automotive environments. In Doyle, Neil (Ed.) 24th ARRB Conference Proceedings, ARRB Group Ltd., Australia, Victoria, Melbourne, pp. 1-17.

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Abstract

Voice recognition is one of the key enablers to reduce driver distraction as in-vehicle systems become more and more complex. With the integration of voice recognition in vehicles, safety and usability are improved as the driver’s eyes and hands are not required to operate system controls. Whilst speaker independent voice recognition is well developed, performance in high noise environments (e.g. vehicles) is still limited. La Trobe University and Queensland University of Technology have developed a low-cost hardware-based speech enhancement system for automotive environments based on spectral subtraction and delay–sum beamforming techniques. The enhancement algorithms have been optimised using authentic Australian English collected under typical driving conditions. Performance tests conducted using speech data collected under variety of vehicle noise conditions demonstrate a word recognition rate improvement in the order of 10% or more under the noisiest conditions. Currently developed to a proof of concept stage there is potential for even greater performance improvement.

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ID Code: 38385
Item Type: Conference Paper
Keywords: FPGA, Speech Enhancement, Speech Recognition, Automotive Environment
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Microelectronics and Integrated Circuits (090604)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Signal Processing (090609)
Divisions: Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering
Past > Institutes > Information Security Institute
Past > Schools > School of Engineering Systems
Copyright Owner: Copyright 2010 ARRB Group Ltd and please consult the authors.
Deposited On: 09 Nov 2010 12:12
Last Modified: 01 Mar 2012 00:31

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