Speech Articulator and User Gesture Measurements Using Micropower, Interferometric EM-Sensors
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 or other targets 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 synthesis and recognition, speaker or object identification, noise cancellation, hand or head motions for cursor direction, and other applications.
- Publication Date:
- OSTI Identifier:
- Report Number(s):
- DOE Contract Number:
- Resource Type:
- Resource Relation:
- Conference: Institute of Electrical and Electronics Engineers Instrumentation and Measurement Technology Conference, Budapest, Hungary, May 21 - May 23, 2001
- Research Org:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA
- Sponsoring Org:
- Country of Publication:
- United States
- 42 ENGINEERING; ACOUSTICS; AMPLITUDES; ENGINEERS; SPEECH; SYNTHESIS; TARGETS
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