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KEYBOARD FOR MUSICAL INSTRUMENT, AND INSTRUMENT COMPRISING SUCH A KEYBOARD

  • US 20120031254A1
  • Filed: 04/12/2010
  • Published: 02/09/2012
  • Est. Priority Date: 04/14/2009
  • Status: Active Grant
First Claim
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1. Keyboard for musical instrument, including a first under-keyboard (A) and a second under-keyboard (B), each keyboard (A, B) including a plurality of keys whose actuation is able to control the emission of a sound corresponding to a note of music, keyboard in which:

  • each under-keyboard (A, B) includes at least four parallel and equidistant lines, oriented in the same direction, each line including at least one key, and the distance between the lines being identical for both under-keyboards (A, B);

    the arrangement of the keys, and thus the distribution of the notes controlled by the keyboard, being such as;

    on the first under-keyboard (A) [respectively on the second under-keyboard (B)], for each key (t) controlling a note (n), and located on a line (r) arranged between an adjacent lower line (r−

    l) and an adjacent upper line (r+1), there is;

    on the adjacent upper line (r+1)a key (tMa) actuating the upward major third of (n), this key being arranged so that the half-line starting from the key (t) and passing through the key (tMa) forms a first oriented angle (M), [respectively an angle (−

    M) opposite the first angle (M) on the second under-keyboard (B)], with the oriented line (r);

    the value of the first angle (M) belonging to the interval ]0°

    , 90°

    ];

    and/ora key (tma) actuating the upward minor third of the note (n), this key being arranged so that the half-line starting from the key (t) and passing through the key (tma) forms a second oriented angle (m) [respectively an angle (−

    m) opposite the second angle (m) on the second under-keyboard (B)], with the oriented line (r), the value of the second angle (m) belonging to the interval [90°

    , 180°

    [, and being different from the value of the first angle (M);

    on the adjacent lower line (r−

    l)a key (tMd) actuating the downward major third of the note (n), this key being arranged so that the half-line starting from the key (t) and passing through the key (tMd) forms an oriented angle opposite the supplementary angle (M−

    180) of the first angle (M) [respectively the supplementary angle (180−

    M) of the first angle (M) on the second under-keyboard (B)] with the oriented line (r);

    and/ora key (tmd) actuating the upward minor third of the note (n), this key being arranged so that the half-line starting from the key (t) and passing through the key (tmd) forms an oriented angle opposite the supplementary angle (m−

    180) of the second oriented angle (m) [respectively the supplementary angle (180−

    m) of the second angle (m) on the second under-keyboard (B)], with the oriented line (R);

    andon the first under-keyboard (A) [respectively the second under-keyboard (B)], for each key actuating a note (n), there is on the second under-keyboard (B) [respectively the first under-keyboard (A)];

    a key actuating the upward major second of the note (n)and/ora key actuating the downward major second of the note (n)so that the notes are alternatively distributed from one under-keyboard to the other, while being arranged by thirds on each of them.

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