Wind instruments use the vibrations inside a tube where air is transferred through a mouthpiece to make an air column vibrate. There are many types of wind instruments that change their pitch with the length of the column, these instruments make use of a mechanism or just the hand to change the length of the air column. Some instruments need a reed in the middle f the tube to produce sound. There are also other different instruments. Wind instruments mainly act for harmonizing.
Types of wind instruments:
1) Brass instruments: In brass instruments the lips of the player vibrates to vibrate the wind inside the instrument to vibrate. For example: trombone.
2) Woodwind instruments: In these instruments the player either causes a reed to vibrate inside the instrument which disturbs the air column. Or he blows against an edge or across the edge of an opening. For example: the flute.
To obtain variations in notes a player uses many methods, each depending on the type of instrument he is playing. There is a technique commonly used in flutes. In this technique the player closes openings in the tubular to change the length of the vibrating air column, he does this by the use of his finger or by the use of keys. This technique is used in most woodwind instruments.
Then there is the valve technique where there are a few tubes bundled together, the player rotates the air through different tubes at different times, he uses keys or other mechanisms to open and close these valves. This technique is used in almost all brass instruments.
Then there is another technique very commonly used, that is the slide-mechanism technique, there is some kind of a slider that changes the length of the air column. Such as in the trombone.
The players create varying sounds in these three ways, however these are the most common one there are also others.
Wind instruments play a different role in music, the brass instruments make good for musicals chorus. Whilst the woodwind instruments are great for solo performances. Wind instruments are dominant in music but they follow on from another league.
Stanton DeFreitas