Radiant energy – Ionic separation or analysis – Static field-type ion path-bending selecting means
Patent
1993-07-06
1995-12-05
MacDonald, Allen R.
Radiant energy
Ionic separation or analysis
Static field-type ion path-bending selecting means
395 28, 250221, 2503161, 2504951, G10L 506, G10L 708, A61M 3602
Patent
active
054737265
ABSTRACT:
A speech recognition data collection arrangement in which audio sounds spoken by the user are supplemented with lip and mouth movement information obtained from a combination of a light emitting diode and photodiode disposed immediately before the user's face is disclosed. The lip and mouth movement photo information is obtained in the form of an AC coupled amplitude modulated carrier waveform which results from energization of the light emitting diode from a pulsating or alternating current component inclusive source of electrical energy. The lip and mouth movement amplitude modulated carrier waveform is processed with filtering and envelope detection and communicated to a programmed digital computer for the purpose of dual-channel audio and photo based accomplishment of human speech recognition.
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Dorvil Richemond
Hollins Gerald B.
Kundert Thomas L.
MacDonald Allen R.
The United States of America as represented by the Secretary of
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