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Combined Microphone And Capacitance Meter for Computer "Lip Reading"

IP.com Disclosure Number: IPCOM000102166D
Original Publication Date: 1990-Nov-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 1 page(s) / 33K

Publishing Venue

IBM

Related People

Dana, SS: AUTHOR [+3]

Abstract

Computer voice recognition suffers from noise interference and ambiguity. If the position of the lips and chin were measured simultaneously with the sound, the ambiguity would be greatly reduced by programming the computer to use lip reading techniques.

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Combined Microphone And Capacitance Meter for Computer "Lip Reading"

       Computer voice recognition suffers from noise
interference and ambiguity.  If the position of the lips and chin
were measured simultaneously with the sound, the ambiguity would be
greatly reduced by programming the computer to use lip reading
techniques.

      The position of the lips could be easily measured by measuring
the capacity to ground of a conductor held in the region of the lips.
The measurement of capacitance is one of the easiest and most
sensitive of physical measurements, and the position of the lips
(i.e., open or closed) could easily be measured with the conductor
about 1 cm from the lips.  In this position, it could be combined
with a fixed microphone for picking up spoken words.  The combination
of sound and such a simple bit of information as whether the lips
were open or closed could greatly simplify computer speech
recognition.

      In addition, another conductor held under the chin could
measure the chin and would give further information about the speech.

      Both conductors could be rigidly mounted to the microphone that
was simultaneously measuring the sound.  A telephone, for example,
would make a good base for this technique.  The motions of the
telephone held by the speaker would be too slow to interfere with the
measurement of the position of the lips and chin.