What we hear, this is known as our auditory sense. Auditory defensiveness is considered extreme sensitivity to sound. This includes sounds which are not particularly disturbing or distressing to most people. These may be specifically high frequency sounds, low frequency sounds, or both high and low frequency sounds. When children are oversensitive to sound, it results in fear, anxiety, and at times avoidance of the activities that most other children enjoy participating in. A child who has auditory defensiveness, when faced with the sound, might typically cover their ears and show signs of distress - or might begin to cry.