Hearing aids work by carrying the sound from the environment to your ear and makes them louder. Nowadays, hearing aids are digitally powered by a hearing aid battery. A small microphone is used to collect the surrounding sound. A computer chip containing an amplifier adapts that sound into digital code. Here, the chip listens to the sound based on your hearing loss and amplifies the signals. These amplified signals are then converted into a sound that is sent to the ear. A speaker is used to deliver these sounds. Apart from those basic features that we have highlighted, there are other additional features that you can find in a hearing aid.

• Noise reduction: This feature is found in most hearing aids.
• Remote control: This allows you to adjust the features on the hearing aid without touching them.
• Directional microphones: They help to improve sound pick up from your front, and they are aligned with hearing aids. Some hearing aids allow you to focus the microphone in one direction, enhancing your ability to hear.
• Directional audio input: It can allow you to connect to audio through a cord to television, a computer, or a music device.
• Rechargeable battery: This eliminates the need to keep changing the batteries.
• Telecoils: This allows you to hear well when talking on the phone. They get rid of the sound from the environment and only pick the one on the phone.
• Wireless connectivity: Bluetooth connectivity is available on some of these hearing aids allowing you to connect to your phone, speakers, or television.
• Synchronization: This is mostly for people with two hearing aids. The two can be programmed to perform well together by ensuring adjustments done on one ear affects the other one the same way.
You can purchase an invisible hearing aid with your desired additional features.