Subvocal Speech Recognition

As early as 1975, researchers have been testing “the feasibility of designing a close-coupled, two-way communication link between man and computer using biological information from muscles of the vocal apparatus and the electrical activity of the brain during overt and covert (verbal thinking) speech.” 1

An interview with Chuck Jorgensen, Chief Scientist for Neuroengineering at the NASA Ames Research Center in Moffett Field, California, explains that:

Subvocal speech is silent, or sub-auditory, speech, such as when a person silently reads or talks to himself. Biological signals arise when reading or speaking to oneself with or without actual lip or facial movement. A person using the subvocal system thinks of phrases and talks to himself so quietly, it cannot be heard, but the tongue and vocal cords do receive speech signals from the brain.…

Quiet cell phones would be one commercial application; possibly communication between divers, is another. Anyone who needs to use noisy haz-mat suits or work in high-noise environments could benefit from this technology. Environments where you want privacy, such as in teleconferencing and you want to talk to someone around the table – the neuro-electronic methods that we are discussing here pick up more than just word patterns that you might have sub-vocally. They can also identify who the speaker is, and track whether the speaker is tired, angry, happy, or sad, so we have a possibility (we have not done this) here of speech enrichment as well as just communication.2

NASA is also “developing an entirely new type of sensor that doesn’t even have to touch the body, called a capacitive sensor”:

What we would like to do is be able to embed those sensors in either clothing or some kind of simple appliance that would be very convenient for someone to have where the electrical signals would be picked up in a non-invasive and comfortable way and available any time they wanted to use them for controlling a device.3

Related links

1 Dr. L. R. Pinneo and Mr. D. J. Hall, “Feasibility Study for Design of a Biocentric Communication System,” Stanford Research Institute, August 1975, Christians Against Mental Slavery, at (retrieved: April 2005).

2 Who’s Who at NASA – Chuck Jorgensen, May 2004, at (retrieved: 9 April 2011).

3 Op. cit.

See also

John J. McMurtrey, M. S., “Thought Reading Capacity,” 2004, Christians Againt Mental Slavery, at (retrieved: 9 April 2011).

John J. McMurtrey, M. S., “Remote Behavioral Influence Technology Evidence,” 2003, Christians Against Mental Slavery, at (retrieved: 9 April 2011).

Kevin Crosby, “Subvocal Speech Recognition,”, at (retrieved: 9 April 2011).

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