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A metallophone is any musical instrument in which the sound-producing body is a piece of metal (other than a metal string), such as tuned metal bars, tubes, rods, bowls, or plates. Most frequently the metal body is struck to produce sound, usually with a mallet, but may also be activated by friction, keyboard action, or other means. [1]
The speed of sound in any chemical element in the fluid phase has one temperature-dependent value. In the solid phase, different types of sound wave may be propagated, each with its own speed: among these types of wave are longitudinal (as in fluids), transversal, and (along a surface or plate) extensional. [1]
Triangles are made from a variety of metals including aluminum, beryllium copper, brass, bronze, iron, and steel. The metal is bent into a triangular shape with one open end. The instrument is usually held by a loop of some form of thread or wire at the top curve, to enable the triangle to vibrate and it is struck with a metal rod called a ...
A chau gong is made of copper-based alloy, bronze, or brass. It is almost flat except for the rim, which is turned up to make a shallow cylinder. On a 10-inch (25 cm) gong, for example, the rim extends about 1 ⁄ 2 inch (1 cm) perpendicular to the surface. The main surface is slightly concave when viewed from the direction to which the rim is ...
The recognized best composition for bell metal though is a ratio of approximately 80 per cent copper and 20 per cent tin. [13] Bell metal of these ratios has been used for more than 3,000 years and is known for its resonance and "attractive sound". [14] Tin and copper are relatively soft metals that will deform on striking.
In December 1877, [5] Thomas Edison and his team invented the phonograph using a thin sheet of tin foil wrapped around a hand-cranked, grooved metal cylinder. [6] Tin foil was not a practical recording medium for either commercial or artistic purposes, and the crude hand-cranked phonograph was only marketed as a novelty, to little or no profit.
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Polyphon disc records and machines followed in Germany 1905 and in England in June 1908. The trade mark was registered in Britain in 1900. Earlier Polyphon overstamped their place of origin. Polyphon as a label was founded in Leipzig on 8 September 1908 (registered Nr. 110347). In England their Klingsor Records label were repressed under ...