What is the significance of the 0-15 dB hearing threshold range?

The significance of the 0-15 dB hearing threshold range is that it generally indicates normal hearing sensitivity. Hearing thresholds measured in decibels (dB) represent the faintest sounds that a person can hear at various frequencies. A threshold range of 0-15 dB reflects the ability to hear sounds that are very soft, which is consistent with what is considered typical or normal hearing status.

In audiological assessments, thresholds above this range may suggest varying degrees of hearing loss. For instance, thresholds in the mild hearing loss range could start around 16 dB, indicating that sounds must be louder for the individual to hear them effectively. Therefore, the 0-15 dB range is crucial because it establishes a baseline for what is classified as normal hearing, allowing audiologists to identify and diagnose any potential hearing discrepancies based on these measurements.

Other choices relate to conditions that may arise outside of this normal range, either by indicating hearing loss, the need for protection, or levels of hearing that are atypical. Hence, the definition and understanding of the 0-15 dB range is foundational in audiometric evaluation.