
your volume control may be disabled by your hearing
healthcare professional and, therefore, could be
inactive.
Setting Your Ideal Volume
Unison digital hearing instruments equipped with
manual volume control have an ideal volume indicator.
A single beep indicates when the volume control has
reached its ideal level for your particular hearing loss, as
pre-set by your hearing healthcare professional.
Listening in Quiet and Noisy Environments
Your Unison digital hearing aids have a directional
microphone system which focuses on sounds in front of
you (e.g., speech) while reducing sounds from the sides
or behind you (e.g., noise). Your directional system is
activated by the push of the program button. Your
hearing healthcare professional will tell you which
program(s) contain the directional microphones.
Replacing the Microphone Protectors
Your Unison digital hearing aids have a shield to protect
the microphones from dirt and debris. Debris on the
microphone protector reduces the sound quality of the
instrument. You should have the microphone protectors
replaced by your hearing healthcare professional
approximately every three months to ensure optimal
sound quality.
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