Which principle is NOT considered a general guideline for noise control?

The principle of regular area noise monitoring is primarily focused on measuring and assessing noise levels rather than directly controlling or mitigating noise at the source. While monitoring is an important practice for understanding the noise environment and ensuring compliance with safety standards, it does not actively reduce noise exposure.

In contrast, the other options involve proactive approaches to noise control. Increasing distance from the source helps to reduce the intensity of noise as it travels through space. Limiting exposure time minimizes the duration of time individuals are subjected to potentially harmful noise levels, effectively reducing the risk of hearing loss. Using hearing protection provides a direct barrier against excessive noise levels, helping to safeguard hearing health. These strategies are all aimed at reducing or managing noise exposure, making them essential components of effective noise control guidelines.