What is Subvocal Recognition?

The use of silent muscle movements implicated in speech to create silent communication channels.


What it is: Subvocal Recognition refers to technology that transcribes human speech using silent (subvocal) muscular movements that accompany the voice but don’t produce sound in and of themselves. This creates the opportunity for interfaces that allow silent, hands-free communication using the vocal apparatus.

What it does: Speech is the result of complex muscle movements, not all of which generate sound. Thus, using myography (the measurement of muscle contraction) it’s possible to transcribe the intended communication of a “speaker” who is silently enunciating words using the mouth and throat. The process is analogous to lip-reading, but with a greater degree of sophistication, and a greater degree of privacy.

Why it matters: Our environments frequently get in the way of vocal communication. For example, it would be handy to be able to take calls on a crowded bus or in an airport, but noise and social considerations are prohibitive. Also, many would enjoy the ability to narrate their thoughts and make vocal notes they move about their day, but here, too, there are practical and social difficulties. With Subvocal Recognition, such things become possible, allowing some of the advantages of vocal communication to be married to the privacy and portability of digital communication. Additionally, future devices may allow the vocally disabled to communicate more fluidly.

What to do about it: Subvocal Recognition is a technology in its infancy. However, it’s worth keeping an eye on; when the technology matures, it will yield devices that could significantly disrupt fields such as teleconferencing, personal communication, and even smart buildings.

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