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A crystallophone is a musical instrument that produces sound from glass. One of the best known crystallophones is the glass harmonica, a set of rotating glass bowls which produce eerie, clear tones when rubbed with a wet finger. Musical glasses, the glass harp, were documented in Persia in the 14th century. [1]
A micro perforated plate (MPP) is a device used to absorb sound, reducing its intensity. It consists of a thin flat plate, made from one of several different materials, with small holes punched in it. An MPP offers an alternative to traditional sound absorbers made from porous materials.
They consist of an aluminum disc with a coating of nitrocellulose lacquer with acetone added to make a varnish. Glass was often used for the substrate during World War II, when aluminum was in short supply. [2] [3] The production process results in a disc that is different in several ways from the vinyl records sold to customers at retail. Most ...
Metal rods are embedded in a heavy plate to form the elements. Each metal rod is accompanied by an attached glass rod. The metal rod's length, weight and position at the equilibrium point determine the sound's pitch. The glass rod is gently stroked with a wet finger to produce sound.
Cups or wine glasses are filled with varying levels of water. The glasses may either be struck with a dampened stick to produce a percussive sound, or a player may moisten their fingers and rub the rims of the glasses to produce a sound. Robert Tiso playing a glass harp: Glass harmonica (glass armonica, glass harmonium, bowl organ ...
Phonograph cylinders (also referred to as Edison cylinders after its creator Thomas Edison) are the earliest commercial medium for recording and reproducing sound.Commonly known simply as "records" in their heyday (c. 1896–1916), a name which has been passed on to their disc-shaped successor, these hollow cylindrical objects have an audio recording engraved on the outside surface which can ...
With Gimenez out the door, second base remains a fairly big question entering 2025, but Cleveland clearly determined that this sequence of deals was best for the long-term health of the organization.
I found out that it was an animal skull that you would strike, and the sound would come from the teeth-rattling in the loose sockets. So I took that concept and invented the Vibraslap, which was my first patent." [6] The vibraslap was the first patent granted to the instrument manufacturing company Latin Percussion. [7