digital hearing aid - Computer Definition
A hearing aid that processes sound in digital form. Digital techniques were used in hearing aids starting in the early 1990s when programmable devices were the first to amplify specific frequencies rather than all of them. In addition, loud noises can also be suppressed. By the mid-1990s, "100% digital" hearing aids were introduced, whereby digital processing converted the sound itself from analog to digital, processed it in digital form and converted it back into analog for the eardrum. Digital processing offers faster response times and more accurate sound filtering. Digital hearing aids are programmed in real time by the hearing aid practitioner, who obtains immediate feedback from the patient while the unit is in the ear.