Hearing Aid is designed to improve your hearing by amplifying the sounds around you.
You can use it if you have trouble perceiving your surroundings or when you feel uncomfortable wearing headphones and not knowing what is happening around (sound transparency).
The microphone picks up sound the around you, the application boosts the volume and reduces the noise, then your headphones sends these amplified sounds to your ear. All these very fast.
Updated on Jul 26 2022