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The goal of regulation is to make the piano's touch and sound consistent across all notes, allow it to achieve the widest possible range of dynamics comfortably, and make the keys responsive to even the most rapid or most subtle motions of the player. There are many dozens of types of regulation a piano may require.
The Railsback curve shows how a piano tuned to compensate for inharmonicity deviates from theoretically correct equal-tempered tuning. The Railsback curve, first measured in the 1930s by O.L. Railsback, a US college physics teacher, expresses the difference between inharmonicity-aware stretched piano tuning, and theoretically correct equal-tempered tuning in which the frequencies of successive ...
A man tuning an upright piano. Piano tuning is the process of adjusting the tension of the strings of an acoustic piano so that the musical intervals between strings are in tune. The meaning of the term 'in tune', in the context of piano tuning, is not simply a particular fixed set of pitches. Fine piano tuning requires an assessment of the ...
[6]: 88 The 2000s-era grand piano action is a distant descendant of Cristofori's original. One of the most well-known French piano actions was created by Jean Schwander in 1844 and improved upon by his son-in-law Josef Herrburger; the Schwander action is still used in Bechstein pianos. At the turn of the century, Schwander-Herrburger merged ...
Piano Grand piano Upright piano Keyboard instrument Hornbostel–Sachs classification 314.122-4-8 (Simple chordophone with keyboard sounded by hammers) Inventor(s) Bartolomeo Cristofori Developed Early 18th century Playing range The Well-Tempered Clavier, first prelude of Book I Played by Kimiko Douglass-Ishizaka Problems playing this file? See media help. A piano is a keyboard instrument that ...
The Piano Technicians Guild (PTG) is an international professional organization for piano technicians, those who have demonstrated proficiency in piano maintenance, repair, and tuning. Headquartered in Kansas City, Kansas , the PTG was formed in 1957 from the merger of the American Society of Piano Technicians and the National Association of ...
Values in bold are exact on an idealized standard piano. Keys shaded gray are rare and only appear on extended pianos. The normal 88 keys were numbered 1–88, with the extra low keys numbered 89–97 and the extra high keys numbered 98–108. A 108-key piano that extends from C 0 to B 8 was first built in 2018 by Stuart & Sons. [4]
The Fazioli piano company of Sacile, Italy, is now selling pianos with two (or more) actions. The idea is that different actions can be regulated and voiced according to the requirements of particular players or musical styles. Since piano actions are built as a single unit, they can be removed or inserted with just a few minutes' work.