How They Work

SpeechEasy is based on a well-documented phenomenon called the Choral Effect.

SpeechEasy fluency devices are based on a natural phenomenon called the "choral effect." The "choral effect" occurs when people who stutter speak or sing in unison with others and their stutter is dramatically reduced or even eliminated. This "choral effect" has been well documented for decades; however it is only recently that scientists have been able to re-create it in a small, wearable device that can used in everyday life.

SpeechEasy devices are worn similar to a hearing aid, using Altered Auditory Feedback.

However, unlike hearing aids, rather than amplify sound, SpeechEasy devices use a system of Altered Auditory Feedback (AAF) to recreate and optimize the choral effect. What this means is that when someone wears a SpeechEasy device and speaks, their words are digitally replayed in their ear with a very slight delay and frequency modification. As a result, the brain perceives that it is speaking in unison with another person. This perception of 'speaking in unison' creates the "choral effect", thus reducing or even eliminating the stuttering.