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The Harmonic Table keyboard layout was used in a keyboard harmonica called the Harmonetta, [2] invented by Ernst Zacharias [3] and manufactured by Hohner from the early 1950s through the mid-1970s. A similar keyboard was developed by Larry Hanson [4] in 1942 for use with a 53 tone scale but turns the fifth sideways and the major third to the ...
Pérotin, "Alleluia nativitas", in the third rhythmic mode. In medieval music, the rhythmic modes were set patterns of long and short durations (or rhythms).The value of each note is not determined by the form of the written note (as is the case with more recent European musical notation), but rather by its position within a group of notes written as a single figure called a ligature, and by ...
[6] [failed verification] Similar arguments apply to vibrating air columns in wind instruments (for example, "the French horn was originally a valveless instrument that could play only the notes of the harmonic series" [7]), although these are complicated by having the possibility of anti-nodes (that is, the air column is closed at one end and ...
In music theory, limits or harmonic limits are a way of characterizing the harmony found in a piece or genre of music, or the harmonies that can be made using a particular scale. The term limit was introduced by Harry Partch , [ 1 ] who used it to give an upper bound on the complexity of harmony; hence the name.
L-shaped traffic pattern indicators are part of the segmented circle, a visual indicator system designed to provide traffic pattern information. [1] In aviation, a traffic pattern indicator is an L-shaped device which show the airfield traffic pattern to the in-flight aircraft over an aerodrome. [2] The short arm of the "L" represents the base ...
The harmonic seventh differs from the just 5-limit augmented sixth of 225 / 128 by a septimal kleisma ( 225 / 224 , 7.71 cents), or about 1 / 3 Pythagorean comma. [19] The harmonic seventh note is about 1 / 3 semitone ( ≈ 31 cents ) flatter than an equal-tempered minor seventh. When this flatter seventh is used ...
The harmonic seventh chord is a major triad plus the harmonic seventh interval (ratio of 7:4, about 968.826 cents [1]). This interval is somewhat narrower (about 48.77 cents flatter, a septimal quarter tone ) and is "sweeter in quality" than an "ordinary" [ 2 ] minor seventh , which has a just intonation ratio of 9:5 [ 3 ] (1017.596 cents), or ...
A single question mark "?" indicates that the annotator thinks that the move is a mistake and should not have been played. [2] Mistakes often lead to loss of tempo, material, or otherwise a worsening of the player's position.