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Title: Direct and indirect measures of speech articulator motions using low power EM sensors

Low power Electromagnetic (EM) Wave sensors can measure general properties of human speech articulator motions, as speech is produced. See Holzrichter, Burnett, Ng, and Lea, J.Acoust.Soc.Am. 103 (1) 622 (1998). Experiments have demonstrated extremely accurate pitch measurements (< 1 Hz per pitch cycle) and accurate onset of voiced speech. Recent measurements of pressure-induced tracheal motions enable very good spectra and amplitude estimates of a voiced excitation function. The use of the measured excitation functions and pitch synchronous processing enable the determination of each pitch cycle of an accurate transfer function and, indirectly, of the corresponding articulator motions. In addition, direct measurements have been made of EM wave reflections from articulator interfaces, including jaw, tongue, and palate, simultaneously with acoustic and glottal open/close signals. While several types of EM sensors are suitable for speech articulator measurements, the homodyne sensor has been found to provide good spatial and temporal resolution for several applications.
Authors:
; ; ; ;
Publication Date:
OSTI Identifier:
14300
Report Number(s):
UCRL-JC-134183
TRN: AH200136%%442
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: XIVth International Congress of Phonetic Sciences, San Francisco, CA (US), 08/01/1999--08/17/1999; Other Information: PBD: 12 May 1999
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:
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; ACOUSTICS; AMPLITUDES; EXCITATION FUNCTIONS; TONGUE; TRANSFER FUNCTIONS; SPEECH SYNTHESIZERS; ELECTROMAGNETIC RADIATION; SOUND WAVES; PROBES