20
feedback
Occasionally, you
may hear a whistling
noise known as
feedback.
feedback is caused
by amplified sounds
escaping from the
ear, then reflecting off
your hand into the in-
strument’s microphone. It is more likely to occur
during insertion, removal, when adjusting the
volume control or when using the telephone.
It should cease when you move your hand.
Your BTE has sophisticated circuitry to minimize
feedback, but if feedback persists after the
instrument has been inserted correctly and the
volume is set to a comfortable level, contact
your Hearing Professional.