Qualitative and quantitative characteristics of noise.
The qualitative aspect of noise determines what is annoying, punishing or downright maddening. The quantitative is simply the sound pressure, measured in decibels. An example of a fairly low sound level with a particularly irritating quality would be the venerable fingernails on the blackboard. This is a sound that many people will simply try to flee from. If unable to control it the adverse physical and psychological effects begin.
The sound from ATVs and dirt bikes have similar effects. The characteristics are abrupt and random changes in sound levels and pitch. The tone may vary from raspy to a roar to a screech.The unpredictability of the sound is what keeps the unwilling listener on edge.
The unwilling listener often has no escape. They may be in their own home or outdoors on their own property, but are unable to escape. Frustration, anger and even rage are the byproducts of this exposure.
Friday, July 28, 2006
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment