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Action can refer to that of a piano or other musical keyboards, including the electronic or digital stage piano and synthesizer, on which some models have "weighted keys", which simulate the touch and feel of an acoustic piano. The design of the key action mechanism determines the "weight" of the keys, i.e., the force required to sound a note ...
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This is a list of the fundamental frequencies in hertz (cycles per second) of the keys of a modern 88-key standard or 108-key extended piano in twelve-tone equal temperament, with the 49th key, the fifth A (called A 4), tuned to 440 Hz (referred to as A440). [1] [2] Every octave is made of twelve steps called semitones.
A keyboard matrix circuit is a design used in most electronic musical keyboards and computer keyboards in which the key switches are connected by a grid of wires, similar to a diode matrix. For example, 16 wires arranged in 8 rows and 8 columns can connect 64 keys—sufficient for a full five octaves of range (61 notes).
Because these keys receive less wear, they are often made of black colored wood and called the black notes or black keys. Black keys form a pentatonic scale. The entire pattern repeats at the interval of an octave. The arrangement of longer keys for C major with intervening, shorter keys for the intermediate semitones date to the 15th century.
Hammer action keys use some kind of mechanism to replicate the action of a mechanical piano. This is often achieved with some kind of lever mechanism connected to the key. Graded hammer action keys do what hammer action keys do, but also has a different feel on the low versus high notes as on a mechanical piano keyboard. The lower note keys ...
The piano is an example of a velocity-sensitive keyboard instrument. The piano, being velocity-sensitive, responds to the speed of the key-press in how fast the hammers strike the strings, which in turn changes the tone and volume of the sound. Several piano predecessors, such as the harpsichord, were not
The defining characteristic of the spinet was its drop action (sometimes called indirect blow action). In this device, the keys did not engage the action directly; rather they pulled upward on rods called "stickers", which in turn pulled upward on levers located below the level of the keyboard, which in turn engaged the action. The stickers ...