| Home | Free Articles for Your Site | Submit an Article | Advertise | Link to Us | Search | Contact Us |
This site is an archive of old articles


vertical line

Characteristics Of Sound

Sound in brief but remarkeable terms is a vibration, that our ears percieve by the sense of hearing. Most commonly vibrations travel to our ears via the air. The ear then converts these sound waves into nerve impulses that are sent to our brains, where the impulses become sound. To say all that in a more technical language: Sound "is an alternation in pressure, particle displacement, or particle velocity propagated in an elastic material" (Olson 1957). Sound is also a series of mechanical compressions and rarefactions or longitudinal waves that successively propagate through media that are at least a little compressible. What causes sound waves is known as "the source of waves". Examples of sounds sources is: A violin string that vibrates upon being bowed or plucked.

The four characteristics of sound are frequency, wavelength, amplitude and velocity.

The frequency of sound is the number of air pressure oscillations per second at a fixed point occupied by a sound wave.

The amplitude is the magnitude of sound pressure change within the wave. Basically this is the maximum amount of pressure at any point in the sound wave. A sound wave is caused literally by increases in pressure at certain points causing a "domino effect" outward, the higher pressure points are the crests in a http://www.mysoundsite.com - sound wave, and behind them are low pressure points which tail them. These are known as the troughs on a wavelength graph. Sound's propagation Velocity depends largely on the type, temperature and pressure of the medium through which it propagates. Because air is nearly a perfect gas, the speed of sound does not depend on air pressure.

The frequency range of sound that is audible to humans is approx. between 20 and 20,000 Hz. This range of course varies between individuals, and goes down as are age increases. Sounds will begin to damage our ears at 85 dBSPL and sounds above approximately 130 dBSPL will cause pain, as a result are known as the: "threshold of pain". Of course again this range will vary among individuals and will change with age.

Submitted by:

Ryan Fyfe

Ryan Fyfe is the owner and operator of My Sound Site - http://www.mysoundsite.com, which is the best site on the internet for all sound related information.

Feel free to reprint this article as long as you keep the article, this caption and author biography in tact with all hyperlinks.





ARTICLE CATEGORIES

Auto and Trucks
Business and Finance
Computers and Internet
Education
Family
Finances
Food and Drink
Gadgets and Gizmos
Health
Hobbies
Home Improvement
Humor
Kids and Teens
Legal
Marketing
Men
Music and Movies
Online Business
Parenting
Pets and Animals
Politics and Government
Recreation and Sports
Relationships
Religion and Faith
Self Improvement
Site Promotion
Travel and Leisure
Web Development
Women
Writing



http://www.articlesurfing.org/education/characteristics_of_sound.html
Copyright © 1995-2016 Photius Coutsoukis (All Rights Reserved).