Noise is defined as unwanted sound. Although there are many kinds of sounds, there are some types that are especially dangerous to the health and welfare of the public.

Noise is the number one reason people move.

"Boom cars" are cars with loud stereo systems.

Boom cars emit high-intensity/low frequency sound (excessive amounts of bass). This type of sound is dangerous to health, reduces property values and highway safety, and forces law-abiding citizens to seek quieter locales.

Boom cars have been closely linked to murder, aggression, gangs, drugs, speeding, reckless driving, DUI, underage drinking, and other crimes.
It is difficult to discuss the noise produced by boom cars without considering the basic concepts of decibel and frequency levels of sound.

What are normal levels?

What are dangerous levels?

How do abnormal decibel and frequency levels affect the human body and behavior?

Noise….