Headphones active noise cancelling (ANC) weak
4.5
The noise cancellation is not as effective as it used to be or makes a "hissing" sound.
Symptoms
- More background noise
- Hissing/Whistling
- Pressure feeling
Possible Causes
- Worn ear pads
- Blocked microphones
- Firmware bug
Step-by-Step Fix
1
Clean External Mics
Use a soft brush to clear dust from the small mesh grilles on the earcups.
2
Check Ear Pad Seal
Ensure the pads aren't ripped; a good seal is critical for ANC.
3
Recalibrate ANC
Some apps have a "Calibration" tool to adjust for your ear shape.
When to See a Technician
If you hear a high-pitched whistle, a microphone is likely loose or damaged.
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