What is altered auditory feedback?
Altered auditory feedback (AAF) simply means hearing your own voice in a manner that is slightly different from the way you normally hear it. It allows the SpeechEasy user to listen to his or her own voice with Delayed Auditory Feedback (DAF), Frequency Altered Feedback (FAF), or a combination of the two. Using DAF allows the user to hear his or her own voice with a slight temporal delay, similar to an echo. FAF allows the user to hear his or her own voice with a shift in the pitch, so the signal heard is either at a slightly higher or slightly lower pitch than the person’s own voice.
