The reason for this is that the frequency of the first overtone is about 5 2 / 2 2 = 25 / 4 = 6 + 1⁄ 4 times the fundamental (about 2 + 1⁄ 2 octaves above it).
The main reason for using the fork shape is that, unlike many other types of resonators, it produces a very pure tone, with most of the vibrational energy at the fundamental frequency. Description Motion of an A-440 tuning fork (greatly exaggerated) vibrating in its principal modeĪ tuning fork is a fork-shaped acoustic resonator used in many applications to produce a fixed tone. The tuning fork was invented in 1711 by British musician John Shore, sergeant trumpeter and lutenist to the royal court.
They are traditional sources of standard pitch for tuning musical instruments. A tuning fork's pitch depends on the length and mass of the two prongs. It resonates at a specific constant pitch when set vibrating by striking it against a surface or with an object, and emits a pure musical tone once the high overtones fade out. Tuning fork by John Walker stamped with note (E) and frequency in hertz (659)Ī tuning fork is an acoustic resonator in the form of a two-pronged fork with the prongs ( tines) formed from a U-shaped bar of elastic metal (usually steel). Device that generates sounds of constant pitch when struck
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