International Licensing Examination (ILE) Practice Test

What is the average resonant frequency of an adult ear canal?

1. About 1800 Hz

2. About 2700 Hz

3. About 3600 Hz

4. About 4500 Hz

The correct answer is: About 2700 Hz

The average resonant frequency of an adult ear canal is about 2700 Hz. This frequency is significant because it corresponds to the natural resonance of the ear canal, which is shaped and sized in a way that enhances certain sound frequencies as they reach the eardrum. The resonance occurs due to the physical characteristics of the ear canal, such as its length and diameter, which create a standing wave pattern at this frequency. The importance of understanding the resonant frequency is particularly relevant in fields such as audiology, hearing aid design, and sound engineering, as it affects how sound is transmitted and perceived. Selecting the correct average resonant frequency aids in various applications, including tuning auditory devices and understanding human auditory perception, making it crucial for maintaining effective communication and sound clarity in practical scenarios.