| 摘要 |
The ruler for composing or decomposing the chords for polyphonic musical instruments is characterized in that it comprises: ruler slides (A, B, C, D, E, F, P, Q) movable with respect to each other in a given direction and each provided with inscriptions relative to the notes of the chromatic scale, respectively assigned to the fundamental, the third, the fifth, the sixth, the seventh etc... of a chord; -a cursor (K, N) relatively movable in said given direction with respect to the ruler slides, said cursor being provided with a marking (L, N5) positioned to make evident one of the notes of the chromatic scale of each of the slides; -one element (H) integral with the slide (A, P) assigned to the fundamental comprising a marking (G) positioned to make evident the inscriptions relative to the musical chord searched for; the invention applies to a chord ruler for polyphonic musical instrument. |
