Video: Speech reconstructed from brainwaves.
Researchers at the University of California have been working to reconstruct speech from brain activity. While only a few sounds and words are audible in the video, it’s amazing to see that they are getting there.
Of course this would be great news for people with any form of disability affecting their speech, but you can imagine DARPA would also be right into this for military communication as well.
Sound is made up of different frequencies which are separated in the brain and processed in different areas. “Simply put, one spot [of neurons] might only care about a frequency range of 1000 hertz and doesn’t care about anything else. Another spot might care about a frequency of 5000 hertz,” says Pasley. “We can look at their activity and identify what frequency they care about. From that we can assume that when that spot’s activity is increasing there was a sound that had that frequency in it.”