Äänikynnysarvo

Äänikynnysarvo, also known as the hearing threshold, refers to the minimum sound intensity or pressure level that a human ear can detect. It is typically measured in decibels (dB) and represents the quietest sound a person can hear under specific conditions, usually in a sound-isolated environment. This threshold is not constant for all individuals and can vary based on factors such as age, exposure to noise, and individual physiological differences.

The standard reference point for hearing threshold is often considered to be 0 dB, which corresponds to the average hearing threshold of young, healthy adults. However, it's important to note that this is an average, and some individuals may have a slightly lower or higher threshold. As people age, their hearing threshold tends to increase, meaning they require louder sounds to hear them. Similarly, prolonged exposure to loud noises can permanently damage the auditory system and raise the hearing threshold, leading to noise-induced hearing loss.

Audiologists use specialized equipment to measure an individual's hearing threshold across different frequencies. This process, known as audiometry, helps diagnose hearing impairments and determine the extent of hearing loss. Understanding the äänikynnysarvo is crucial for assessing hearing health, designing hearing protection, and setting standards for acceptable noise levels in various environments.