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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.
English: This is a 88 key piano layout with octaves illustrated and hovering that reveals the frequency for the key. (The numbered octaves are black on transparency. They will not show up if the image is displayed on a black background, such as if the background of your browser is set to black, or is black when you open images separately.)
An 88-key piano, with the octaves numbered and middle C (cyan) and A 4 (yellow) highlighted A440 is widely used as concert pitch in the United Kingdom [ 8 ] and the United States . [ 9 ] In continental Europe the frequency of A 4 commonly varies between 440 Hz and 444 Hz. [ 8 ]
The purpose of this adjustment is to move the 12 notes within a smaller range of frequency, namely within the interval between the base note D and the D above it (a note with twice its frequency). This interval is typically called the basic octave (on a piano keyboard, an octave has only 12 keys). This dates to antiquity: in Ancient Mesopotamia ...
Rather than pressing a key, the performer typically strikes each element (e.g., a metal or wood bar) with a mallet. There are some examples of a musical keyboard layout used for non-musical devices. For example, some of the earliest printing telegraph machines used a layout similar to a piano keyboard. [9] [10]
For an instrument in equal temperament tuned to the A440 pitch standard widely adopted in 1939, middle C has a frequency around 261.63 Hz [1] (for other notes see piano key frequencies). Scientific pitch was originally proposed in 1713 by French physicist Joseph Sauveur and based on the numerically convenient frequency of 256 Hz for middle C ...
This is the most common tuning system used in Western music, and is the standard system used as a basis for tuning a piano. Since this scale divides an octave into twelve equal-ratio steps and an octave has a frequency ratio of two, the frequency ratio between adjacent notes is then the twelfth root of two, 2 1/12 ≋ 1.05946309... .
Download QR code; Print/export Download as PDF; Printable version; In other projects Wikimedia Commons; Wikibooks; ... Piano key frequencies; Piano Lessons (book)
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