At which frequency range is the human ear most sensitive?

The human ear exhibits its highest sensitivity to sound frequencies within the range of 3000 to 4000 Hz. This frequency range corresponds to sounds crucial for understanding speech, particularly the consonants that provide clarity and intelligibility in communication. The sensitivity of the ear in this range is due to the physical structure of the ear and how it processes sound vibrations, as well as the brain's ability to interpret these frequencies.

It's important to note that while the ear is sensitive to sounds at various frequencies, its peak sensitivity in the 3000 to 4000 Hz range allows for optimal hearing in everyday conversational contexts. Understanding this frequency range helps in the effective fitting and tuning of hearing instruments, ensuring they amplify sounds that are most important for communication.