Subvocal speech recognition: Speak without your mouth

NASA researchers can hear what you’re saying, even when you don’t make a sound.

It’s been a long time scientists have been looking for ways to decrypt what our conscious mind was thinking about. Subvocalisation is and can be compared to when you read. Each sentences you read are being “vocalised” in your head, which mean they are mentally said but not vocally.

All you have to do is say the words to yourself and you’re sending weak electrical currents from your brain to the speech muscles. Jorgensen’s trick is to record those signals (known as electromyograms), process them with statistical algorithms and compare the output with prerecorded signal patterns of spoken words, phrases and commands. When there’s a match, the unspoken turns into speech.