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Piano key frequencies. 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 few of the "innovations" discussed below were actually present in at least some pianos in the distant past. They are innovations to the extent that the old idea had become unfamiliar to most of the piano community through long disuse.
A musical keyboard is the set of adjacent depressible levers or keys on a musical instrument. Keyboards typically contain keys for playing the twelve notes of the Western musical scale, with a combination of larger, longer keys and smaller, shorter keys that repeats at the interval of an octave. Pressing a key on the keyboard makes the ...
A keyboard instrument is a musical instrument played using a keyboard, a row of levers which are pressed by the fingers. The most common of these are the piano, organ, and various electronic keyboards, including synthesizers and digital pianos. Other keyboard instruments include celestas, which are struck idiophones operated by a keyboard, and carillons, which are usually housed in bell towers ...
These notes correspond to the white keys on the keyboard of a piano or organ. The keys of A minor or C major and their scales contain all natural notes, whereas other scales and keys have at least one sharp or flat.
Notes of each major scale are stacked on top of each other (in alternating rows of three and four notes), putting them closer together. The Wicki–Hayden note layout is a compact and logical musical keyboard layout designed for concertinas and bandoneons.
Action (piano) The piano action mechanism[ 1 ] (also known as the key action mechanism[ 2 ] or simply the action) of a piano or other musical keyboard is the mechanical assembly which translates the depression of the keys into rapid motion of a hammer, which creates sound by striking the strings. Action can refer to that of a piano or other ...
Kurzweil Music Systems is an American company that produces electronic musical instruments. It was founded in 1982 by Stevie Wonder (musician), Ray Kurzweil (innovator) and Bruce Cichowlas (software developer). Kurzweil was a developer of reading machines for the blind, and their company used many of the technologies originally designed for ...