Digital Signal Processing has been available for a long time. And with the development of computer technology, digital signal processing became widespread.
During the 1990s, the Digital Signal Processing technology reached a point where it became a feasible, mature and efficient solution for hearing aids also.
The first step in digital signal processing of a sound signal involves a conversion into a stream of numbers representing the sound. The numbers can then be analysed and the desired properties enhanced before it is converted back into sound again.
Today’s advanced algorithms for enhancing sound to compensate for a hearing loss are way beyond simple amplification and filtering. Such complex algorithms are best implemented using digital signal processing. |