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Title: Speech Articulator and User Gesture Measurements Using Micropower, Interferometric EM-Sensore

Very low power, GHz frequency, ''radar-like'' sensors can measure a variety of motions produced by a human user of machine interface devices. These data can be obtained ''at a distance'' and can measure ''hidden'' structures. Measurements range from acoustic induced 10-micron amplitude vibrations of vocal tract tissues, to few centimeter human speech articulator motions, to meter-class motions of the head, hands, or entire body. These EM sensors measure ''fringe motions' as reflected EM waves are mixed with a local (homodyne) reference wave. These data, when processed using models of the system being measured, provide real time states of interface positions vs. time. An example is speech articulator positions vs. time in the user's body. This information appears to be useful for a surprisingly wide range of applications ranging from speech coding and recognition, speaker or object identification, noise cancellation, hand or head motions for cursor direction, and other applications.
Authors:
Publication Date:
OSTI Identifier:
791054
Report Number(s):
UCRL-JC-140496
TRN: US200302%%495
DOE Contract Number:
W-7405-Eng-48
Resource Type:
Conference
Resource Relation:
Conference: 2001 Institute of Electrical and Electronics Engineers Instrumentation and Measurement Technology Conference, Budapest (HU), 05/21/2001--05/23/2001; Other Information: PBD: 15 Sep 2000
Research Org:
Lawrence Livermore National Lab., CA (US)
Sponsoring Org:
USDOE Office of Defense Programs (DP) (US)
Country of Publication:
United States
Language:
English
Subject:
59 BASIC BIOLOGICAL SCIENCES; ACOUSTICS; AMPLITUDES; CANCELLATION; ENGINEERS