Intensity is determined by the volume control.
The disturbing and harmful effects of noise depend both on the loudness and the frequency of the tones making up noise. A conversational voice is about 65 dB. A shout is 90 dB or greater. The frequency of a locomotive horn is about 250 Hz. Health Effects Excessive noise can destroy the ability to hear, and may also put stress of other parts of the body, including the heart. For most effects of noise, there is no cure, so that prevention of excessive noise exposure is the only way to avoid health damage.