| During the last five years, there has been an | | | | with the several types of hearing aids such as |
| explosion of digital hearing aids on the market. To | | | | behind-the-ear (BTE) and completely-in-the-canal |
| date, there are twenty-two manufacturers for digital | | | | (CIC) styles. |
| hearing aids. The digital hearing aid was first | | | | The digital hearing aid design simply constitutes the |
| introduced before the end of the 1980s. Back then, | | | | conversion of analogue waveform into a string of |
| hearing aids used digital signal processing or DSP, | | | | numbers for processing. Additionally, digital hearing aid |
| which became the basic framework for the recent | | | | design in the term of using digital signal processing |
| digital hearing aid. | | | | allows several manufacturers to proving hearing loss |
| The evolution of digital hearing aid design made it | | | | solutions with enhanced processing and features. |
| possible for digital hearing aids to be incorporated | | | | |