Types of Technology
Types of Technology
1. Basic or Conventional Analog Instruments
- improve hearing sensitivity in quiet
- do not enhance speech over background noise
- do not address needs of individuals with hearing loss who have severe recruitment or reduced tolerance to loud sounds or unusual configurations of hearing loss
2. Digitally Programmable Analog Instruments
- are analog hearing instruments which are programmed digitally using a computer
- user has a switch on the hearing aid or remote to change analog response for quiet background noise, music, telephone, etc.
- sound itself is still processed in an analog fashion
3. 100% Digital Instruments
- a true or 100% digital hearing aid is not only programmed digitally but processes the sound signal itself digitally
- true digital hearing aids change the analog signal into a digital code via an Analog to Digital (A/D) converter allowing the wave form to be manipulated digitally before being reconverted by a D/A converter back into an analog signal or sound wave into the user's ear
- the amount and variety of processing possible digitally far surpasses what can be achieved when the signal remains in an analog form providing the following
- cd sound quality
- no mic or internal noise or distortion
- suppression of ambient or environmental background noise
- improved user voice quality
Directional & Advanced or Adaptive Directional Microphone Systems
Assistive Listening Devices Disposable Hearing Aids
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