NDLI: On the phonetic information in ultrasonic microphone signals

Content Provider	IEEE Xplore Digital Library
Author	Livescu, K. Bo Zhu Glass, J.
Copyright Year	2009
Description	Author affiliation: Computer Science and Artificial Intelligence Laboratory, Massachusetts Institute of Technology, Cambridge, 02139, USA (Bo Zhu; Glass, J.) \|\| Toyota Technological Institute at Chicago, IL 60637, USA (Livescu, K.)
Abstract	We study the phonetic information in the signal from an ultrasonic “microphone”, a device that emits an ultrasonic wave toward a speaker and receives the reflected, Doppler-shifted signal. This can be used in addition to audio to improve automatic speech recognition. This work is an effort to better understand the ultrasonic signal, and potentially to determine a set of natural sub-word units. We present classification and clustering experiments on CVC and VCV sequences in speaker-dependent and multi-speaker settings. Using a set of ultrasonic spectral features and diagonal Gaussian models, it is possible to distinguish all consonants and most vowels. When clustering the confusion data, the consonant clusters mostly correspond to places and manners of articulation; the vowel data roughly clusters into high, low, and rounded vowels.
Starting Page	4621
Ending Page	4624
File Size	273903
Page Count	4
File Format	PDF
ISBN	9781424423538
ISSN	15206149
DOI	10.1109/ICASSP.2009.4960660
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-04-19
Publisher Place	Taiwan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Microphones Frequency Hardware Speech recognition Loudspeakers Spectrogram Band pass filters Glass Computer science Artificial intelligence multimodal ultrasonic
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
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