NDLI: Auditory masking based acoustic front-end for robust speech recognition

Content Provider	IEEE Xplore Digital Library
Author	Paliwal, K.K. Lilly, B.T.
Copyright Year	1997
Description	Author affiliation: Sch. of Microelectron. Eng., Griffith Univ., Brisbane, Qld., Australia (Paliwal, K.K.)
Abstract	This paper presents an acoustic front-end which uses the properties of auditory masking for extracting acoustic features from the speech signal. Using the properties of simultaneous masking found in the human auditory system, we compute a masking threshold as a function of frequency for a given speech frame from its power spectrum. All those portions of the power spectrum which are below the auditory threshold are not heard by the human auditory system due to masking effects and hence can be discarded. These portions are replaced by the corresponding portions in the masking threshold spectrum. This modified power spectrum is processed by the linear prediction analysis or homomorphic analysis procedure to derive cepstral features for each speech frame. We study the performance of this front-end for speech recognition under noisy environments. This front-end performs significantly better than the conventional linear prediction or homomorphic analysis based front-ends for noisy speech. In terms of signal-to-noise ratio, simultaneous masking offers an advantage of more than 5 dB over the LPCC front-end in isolated word recognition experiments and 3 dB in continuous speech recognition experiments.
Starting Page	165
Ending Page	168
File Size	481838
Page Count	4
File Format	PDF
ISBN	0780343654
DOI	10.1109/TENCON.1997.647283
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1997-12-04
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Robustness Speech recognition Speech analysis Cepstral analysis Speech coding Humans Auditory system Masking threshold Working environment noise Feature extraction
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
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
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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