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זה בדיוק אותו התקן באוזן שמשמיע את מה שאומרים ב- delay. הפיסקה הרלוונטית מתוך כל הבלה בלה: SpeechEasy fluency 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 becoming a stuttering treatment that can reduce or even eliminate stuttering.