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In a free-standing resonator structure air is used to separate the resonator from the substrate/surrounding. The structure of a free-standing resonator is based on some typical manufacturing steps used in micro-electromechanical systems MEMS. A schematic cross-section of the SMR structure with a one-sided acoustic mirror
Acoustic resonance is an important consideration for instrument builders, as most acoustic instruments use resonators, such as the strings and body of a violin, the length of tube in a flute, and the shape of a drum membrane. Acoustic resonance is also important for hearing.
Hohner has manufactured a wide range of instruments, such as harmonicas, kazoos, accordions, recorder flutes, melodicas, banjos, electric, acoustic, resonator and classical guitars, basses, mandolins and ukuleles (under the brand name Lanikai). Hohner is known mostly for its harmonicas.
In many keyboard percussion instruments, below the centre of each note is a tube, which is an acoustic cavity resonator. The length of the tube varies according to the pitch of the note, with higher notes having shorter resonators. The tube is open at the top end and closed at the bottom end, creating a column of air that resonates when the ...
Production of resonator guitars ceased in 1941, followed by all fretted instruments in 1954. That same year, Regal closed down as a company, and its rights to the name and assets were sold to the Harmony Company. Harmony owned Regal for a brief period so Fender took over the brand in the late 1950s. [1]
The whirly tube, corrugaphone, or bloogle resonator, also sold as Free-Ka in the 1960s-1970s, is an experimental musical instrument which consists of a corrugated (ribbed) plastic tube or hose (hollow flexible cylinder), open at both ends and possibly wider at one end , the thinner of which is rotated in a circle to play. It may be a few feet ...