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Synchronization of volume control setting between hearing aids – The vol-
ume in both hearing aids will change when the VC is adjusted on one ear.
Synchronization of listening programs between hearing aids – The same lis-
tening program is used in both hearing aids when one is changed by the
user.
Surveillance of partner hearing aid – The hearing aid(s) will signal an alert
(“partner check”) when a hearing aid battery has expired, or that one of the
hearing aids has fallen off. In rare instances, a much stronger wireless source
nearby may activate this alert. This serves as an early warning to the wearer
of such service interruption.
Coordination of compression – The hearing aids maintain the intensity level
difference between ears (inter-aural level difference, ILD). In some situations
where speech is presented to one side and noise the other side, this coordi-
nated action could enhance the relative loudness of the speech sounds to the
noise background and improve speech understanding for some wearers.
More accurate identification of feedback – The hearing aids distinguish be-
tween “true” hearing aid whistling (or feedback) and music sounds to pre-
vent unnecessary feedback cancellation and preserve natural sound quality.
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