Stringed Instruments

• based on vibration of a strings: violin, cello, piano, guitars, harp…… amplified by a larger body: resonator (the box on which the strings are attached)

• fundamental frequency (standing wave) is accompanied by the harmonics

- fundamental wavelength: 2l; harmonics wavelength: l, 2/3 l, l/2,..

• Fundamental frequency varied by the:

- length of the string

(a collection of different

lengths, or modifying the

length by pressing….)

- tension in the spring

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