What is a hearing threshold defined as?

A hearing threshold is defined as the lowest level at which a subject can respond to sound stimuli at least 50% of the time. This measurement is crucial in audiology, as it reflects the softest sounds that an individual can detect, indicating both hearing sensitivity and the integrity of the auditory system. Understanding this threshold is fundamental for diagnosing hearing loss and implementing appropriate measures, such as hearing aids or other interventions.

The other definitions do not accurately describe the hearing threshold. The lowest level detectable by the examiner is more about the examiner's capabilities rather than the subject's response, while the level at which sound becomes unbearable refers to discomfort rather than detection capabilities. Lastly, the maximum level of audible sound speaks to the limits of hearing but does not define the threshold for responding to sound. Knowing the difference is essential in clinical settings when assessing hearing capability.