NDLI: Speech enhancement using beamforming and non negative matrix factorization for robust speech recognition in the CHiME-3 challenge

Content Provider	IEEE Xplore Digital Library
Author	Vu, Thanh T. Bigot, Benjamin Chng, Eng Siong
Copyright Year	2015
Description	Author affiliation: Rolls-Royce@NTU Corporate Lab, Nanyang Technological University, Singapore (Vu, Thanh T; Bigot, Benjamin; Chng, Eng Siong)
Abstract	In this paper we present our contribution to the third CHiME challenge on speech separation and recognition for noisy multi-channel recordings. The use-case of the challenge consists in single speaker utterances recorded in highly non-stationary noisy environments using a 6-microphone array mounted on a tablet computer. The front-end of our system is performing speech enhancement by cascading a cross-correlation-based channel selection, Signal Dependent MVDR beamforming and online source separation based on sparse NMF. The back-end module is a state-of-the-art speech recognition system with DNN acoustic models trained on fMLLR features and a RNN Language Model. Our system reaches an overall WER of 11.94% on real test recordings, achieving a relative improvement of 65% compared to the baseline system.
Starting Page	423
Ending Page	429
File Size	347948
Page Count	7
File Format	PDF
e-ISBN	9781479972913
DOI	10.1109/ASRU.2015.7404826
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-12-13
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Speech Noise measurement Speech enhancement Acoustics Microphones Speech recognition Training CHiME challenge Speech Enhancement Automatic Speech Recognition MVDR Beamforming Non Negative Matrix Factorization
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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