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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.
The S90 provides 88 fully weighted keys, the number equivalent to a standard piano, emulating the pianistic mechanism. [5] The keyboard naturally provides initial touch, but also aftertouch response and has a 64-note polyphony [6] with 16 multitimbral parts providing a maximum of 4 performance parts.
Magna Organ introduced in 1935, [7] [8] was a multi-timbral keyboard instrument invented in 1934 by a Yamaha engineer, Sei-ichi Yamashita. It was a kind of electro-acoustic instrument, an acoustic instrument with additional electronic circuits for sound modification.
The keyboard runs from E1 to E7 and it comes with 73 keys. [9] The E to E keyboard configuration is similar to one used in the Rhodes and Yamaha CP-70 electronic pianos. [2] The 73 keys model does not have continuous pressure monitoring like 88 keys model, which could be used to add extra modulation to the sound. [8]
The original Casiotone line was abbreviated to CT in the mid-1980s but has continued to feature full-sized keys. MT and PT lines typically feature mini keys and the VL line features push-button keys. Most Casio keyboards feature automated accompaniment sections which may include drums, bass, chords and harmonies.
A piano is a keyboard instrument that produces sound when its keys are depressed, activating an action mechanism where hammers strike strings. Modern pianos have a row of 88 black and white keys, tuned to a chromatic scale in equal temperament. A musician who specializes in piano is called a pianist.
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