ENHANCED AUTOMATIC SPEECH RECOGNITION
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United States of America Patent
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Aug 16, 2018
app pub date -
Jul 21, 2016
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Jul 26, 2015
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Abstract
Devices, systems, and methods of enhanced automatic speech recognition. An acoustic microphone senses or captures acoustic signals that are uttered by a human speaker. An optical microphone or laser microphone transmits a laser beam aimed towards the face of the human speaker; receives a reflected optical feedback signal; and produces an optical self-mix signal by self-mixing interferometry. The self-mix signal is used by a training unit of a speech recognition processor. Optionally, the self-mix signal is used by an utterance recognition unit of the speech recognition processor. Optionally, the self-mix signal is utilized for enhancing the acoustic signals, or for constructing a digital filter that is applied to the acoustic signal; and the enhanced acoustic signal, or the filtered acoustic signal, is used by the training unit or by the a recognition unit of the speech recognition processor.
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