Widex sound technology

A digital hearing aid is characterised by fully digital signal processing. Widex digital hearing aids are renowned for the quality of their sound and at the heart of this is our digital signal processing.

What is digital signal processing?

In a digital hearing aid the continuous analogue signal from the microphone system is digitised in a sampling process where the analogue signal is converted into a discrete digital signal.

The main objectives in processing signals include:

Audibility of sound - the central function of a hearing aid is to make sounds audible which otherwise have become fully or partially inaudible. This includes speech but also other sounds.

Speech intelligibility in difficult listening situations - the aim is to optimise the overall sound quality by enhancing the frequency regions that are important for speech intelligibility and reducing background noise.

Comfort - it is important that a hearing aid does not amplify loud sounds unnecessarily and that it minimises the discomfort of feedback whistling and occlusion (the unnaturally loud sound of chewing or your own voice when the ear canal is partially blocked by an earmould or shell).

Widex’ ISP technology

In 2005 Widex set a new standard within digital sound processing by introducing a new sound technology, Integrated Signal Processing (ISP).

Read more about ISP and see which hearing aids are based on ISP technology.

In 2008 ISP technology was further refined - Widex calls it Dual ISP.
Read more about Dual ISP and see which hearing aids are based on Dual ISP technology.

All Widex hearing aids introduced after 2005 make use of either the ISP or Dual ISP technology.