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When you can hear the high-pitched whistling sound of your hearing aid, it is known as feedback. Feedback occurs when sound that comes out of the hearing aid speaker is amplified back into the microphone and amplified once more. This forms a loop and this produces a sharp squealing sound. It may happen in any brand, such as devices provided by Phonak or Signia.
Whistling is not something uncommon, yet it must not occur every now and then. In case it does, it could be because of a straightforward reason.
Whistling of Hearing Aids: Common Causes
Loose Fit
When not fitted correctly, your ear and hearing device may cause sound to escape out of your ear and back into the microphone. This happens to be among the most prevalent sources of feedback.
Earwax Build-Up
The earwax may make the ear canal or speaker of the hearing aid blocked. At times, sound cannot go in the right direction, it can rebound and may lead to whistling.
High Volume Setting
The increase in the volume can result in the microphone receiving amplified sound, which can enhance the possibility of feedback.
Damaged Tubing or Dome
Broken tubing, ripped domes or battered earmolds may escape sound and form feedback.
Objects Close to the Ear
A phone call can create a trap by talking on the phone, hugging someone or a tight hat can provoke whistling.
What You Can Do to End the Whistling?
Check the Fit Carefully
Replace and put on your hearing aid. Ensure that it fits well and safely into your ear.
Clean Your Hearing Aid
Wipe with a cleaning tool or soft brush to clean the wax or dirt. Wash domes, earmolds and wax filters.
Lower the Volume Slightly
Decrease the volume and determine whether the sound becomes better.
Replace Worn Parts
In case there is any damage on domes or tubing, change them. Big feedback problems can be brought about by small cracks.
Visit Your Audiologist
Consult your hearing care professional in case the problem persists. They can modify programming or propose a new fitting.
Whistling can be corrected most of the time. Mostly the problem of feedback can be avoided by regular cleaning and proper fitting.