I wear a necklace with a microphone and bluetooth electronics. My hearing aids are like any other wireless headset I suppose. Whether I link to my cell phone or the bluetooth in my car the sound is transmitted directly into my hearing aids. The past couple of years the technology has advanced exponentially.
I have been tracking the advances made with CRISPR (DNA Editing) and hearing loss. It will be interesting to see when they begin clinical trials with humans!!!!