Hearing functions

Three major hearing functions are considered in design applications.

  • Sound detection is the ability to detect beeps, tones and other sound output from various products.
  • Speech discrimination is the ability to detect and understand speech in quiet and noisy environments.
  • Sound localisation is the ability to tell which direction a sound is coming from.
A phone is hidden amongst other items on a car dashboard.

Sound detection ability is needed to realise that a phone is ringing, while localisation ability helps to locate the phone, and speech discrimination is necessary to understand what the caller is saying