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Showing posts from January, 2018

What is the Sound

 Sound Sound is produced by a vibrating source that causes the matter around it to move. • No sound is produced in a vacuum - Matter (air, water, earth) must be present! • The vibration of the source causes it to push/pull its neighboring particles, which in turn push/pull its neighbors and so on. • Pushes increase the air pressure (compression) while pulls decrease the air pressure (rarefaction)  • The vibration sends a wave of pressure fluctuation through the air Waves • Waves can be longitudinal (the particles move in the same direction of the wave) or transversal (the particles’ movement is perpendicular to the wave’s direction)  Sound waves (1) • In sound wave motion air particles do not travel, they oscillate around a point in space. • The rate of this oscillation is known as the frequency of the sound wave and is denoted in cycles per second (cps) or hertz (Hz). • The amount of compression/rarefaction of the air is the amplitude of the sound wave....

Traditional music instrument in sri lanka

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Sri Lanka's traditional musical instruments The classical Sinhalese Orchestra consists of five categories of instruments. The drum is the king of local percussions instruments and without it, there will be no dance. [9]  The vibrant beat of the rhythm of the drums form the basic of the dance. The dances feet bounce off the floor and they leap and swirl in patterns that reflex the complex rhythms of the drum beat. This drum beat may seem simple on the first hearing but it takes a long time to master the intricate rhythms and variations, which the drummer sometimes can bring to a crescendo of intensity. Gatabera The typical Sinhala Dance is identified as the Kandyan dance and the Gatabera is indispensable to this dance. It is a long, double-headed drum with a bulge in the middle, worn around the player's waist. Yak-bera The Yak-bera is also known as "the demon drum," or the drum used in low country dance, in which the dancers wear masks and perform devil da...

List of Type of music

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