Action
Most diatonic button accordions have a "single-action" (or "bisonoric") keyboard, meaning that each button produces two notes: one when the bellows are pressed or pushed (closed) and another when the bellows are drawn or pulled (opened). In this respect, these instruments operate like a harmonica.
(In contrast, most other types of accordion, for example piano accordions and chromatic button accordions, are “double-action” – or “unisonoric” – because each key produces a single note regardless of bellows direction.)
Other single-action or bisonoric members of the free-reed family include the German concertina, the Anglo-German (or “Anglo”) concertina, the bandonion, and the Chemnitzer concertina (see concertina).
There are varieties of diatonic button accordion that are double-action, such as the garmon.
Read more about this topic: Diatonic Button Accordion
Famous quotes containing the word action:
“A dramatist is one who believes that the pure event, an action involving human beings, is more arresting than any comment that can be made upon it.”
—Thornton Wilder (1897–1975)
“The Oriental philosophy approaches easily loftier themes than the modern aspires to; and no wonder if it sometimes prattle about them. It only assigns their due rank respectively to Action and Contemplation, or rather does full justice to the latter. Western philosophers have not conceived of the significance of Contemplation in their sense.”
—Henry David Thoreau (1817–1862)
“The philosophy of action for action, power for the sake of power, had become an established orthodoxy. “Thou has conquered, O go-getting Babbitt.””
—Aldous Huxley (1894–1963)