Depending on the manner of sound production, we devide these instruments on free aerophones that produce sound by setting free air into vibration and the wind instruments. The first group is further divided into the instruments which produce sound by their spinning through the air , instruments whereby the sound is produced by interrupting the air flow and the instruments whereby the sound is produced by explosion. The other group – wind instruments , are also devided into edge-blown aerophones or flutes whereby sound is produced by blowing against the rim of the tube and reed-pipes whereby sound is produced by use of a single or double reed and the trumpets whereby sound is produced by blowing air by pursed lips into the pipe hole or into the cylindrical mouthpiece.
Musical instruments in which sound is produced primarily by way of the instrument itself vibrating (idios = alone, phone = sound). Depending on the manner of sound production they are devided into four groups, i.e. those that produce sound by clapping, shaking, plucking and rubbing, scraping or friction.
Depending on the manner of sound production chordophones can be devided into three groups: by rubbing string with the bow (bowing), by plucking strings with fingers or a plectrum (plucking) and by striking strings with small mallets (striking) (Gojković, 1989:119).
With membranophone instruments (lat. membrana = skin) sound is produced by way of a vibrating stretched membrane which is most commonly made from thin animal skin. Apart from animal skin the vibrating membrane can also be made from paper, plant membrane or metal. The sound is produced on the membrane by beating, friction or modifying sound through a vibrating membrane.
