Overamplify

Pastor Andres's public voice was deep and rumbly; with the mike overamplifying him, and the faint Hispanic accent, he was hard to understand.

Physiological thresholds can differ from behavioral thresholds by ±15–20 dB HL. Thus, without verification of behavioral responses with amplification, hearing aids may underamplify or overamplify.

What is interesting to note here is that the 2⁄3 gain can be seen to overamplify over the curved line of the impaired ear more than underamplifies, whereas the 1⁄3 gain curve illustrates the opposite, where it tends to underamplify sound to the ear.