1. Main causes of whistling sounds produced by hearing aids
2. Blocked sound tube
3. Incorrect settings
4. Blocked ear canal
5. Solutions

• ill-fitting ear pieces
• blocked silicone tube
• device is incorrectly set up
• blocked ear canal
• ill-fitting ear pieces

Whistling sounds can be generated when the ear pieces are incorrectly shaped or not well adjusted to the ear canal. The amplified sound coming out of the earmold is picked up again and amplified by the internal microphone which itself generates a sound of increasing intensity until satiation – this is the typical whistling sound that is also referred to as 
"feedback“. To solve this problem, contact your AudioNova hearing aid acoustician to check or replace your earmolds.

When the hearing aid’s sound tube is blocked sound can no longer be transmitted correctly and produce the annoying whistle. Contact your GEERS Acoustics Center to have them thoroughly clean the sound tube or replace it.

Whistling sounds can also be generated by incorrect settings of the hearing aid. Your hearing aid acoustician can check whether your hearing aid’s settings are correct or if they have to be adjusted.

Whistling sounds can also be caused by things that are not directly attributable to the hearing aid. For instance, the whistling sound can be caused by an earwax plug blocking the ear canal. Consult your family doctor or audiologist to have the ear wax plug removed.

If your hearing aid is producing a whistling sound, don't ignore it but have the problem rectified. One of the possible solutions is a feedback suppression system that is built into many hearing aids and significantly helps removing annoying whistling sounds.

To find the cause and adequate solution contact the closest 20dB Digisound. Following a thorough analysis the 20dB Digisound audiologist can suggest possible solutions to your problem.