Digital on the other hand generates, stores, and processes data in terms of two states: positive and non-positive. Positive is expressed or represented by the number 1 and non-positive by the number 0. Thus, data transmitted or stored with digital technology is expressed as a string of 0's and 1's. Each of these state digits is referred to as a bit.
Digital processing means faster response times and more accurate sound filtering Digital processing converted the sound itself from analog to digital, processed it in digital form and converted it back into analog for the eardrum.
A digital hearing aid is a hearing aid device that receives sound and digitizes it (breaks sound waves up into very small, discrete units) prior to amplification.
A digital hearing aid uses a microphone, but a microprocessor performs most of the device's functions digitally. Because the signal is represented as a series of numbers, it can be quickly and accurately altered.
1. Non Programmable or Trimmer digital hearing aid - which can not be programmed through computer. All standard setting done at the time of manufacturing.
2. Programmable digital hearing aid - programmed through computer- has number of features hence buying options differs-
Programmable digital hearing aid - has several features considering today's life style of human being- hence buying options differs-