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Prolation canon. In music, a prolation canon (also called a mensuration canon or proportional canon) is a type of canon, a musical composition wherein the main melody is accompanied by one or more imitations of that melody in other voices. Not only do the voices sing or play the same melody, they do so at different speeds (or prolations, a ...
Example of a canon in three voices at the unison sung with a text of a German poem, four beats apart. In music, a canon is a contrapuntal (counterpoint -based) compositional technique that employs a melody with one or more imitations of the melody played after a given duration (e.g., quarter rest, one measure, etc.).
An artistic canon of body proportions (or aesthetic canon of proportion), in the sphere of visual arts, is a formally codified set of criteria deemed mandatory for a particular artistic style of figurative art. The word canon (from Ancient Greek κανών (kanṓn) 'measuring rod, standard') was first used for this type of rule in Classical ...
Mensuration (mathematics), a branch of mathematics that deals with measurement of various parameters of geometric figures and many more. Forest mensuration, a branch of forestry that deals with measurements of forest stand. Mensural notation of music. Mensuration canon, a musical composition wherein the main melody is accompanied by one or more ...
Missa prolationum. The Missa prolationum is a musical setting of the Ordinary of the Mass by Johannes Ockeghem, dating from the second half of the 15th century. Based on freely written material probably composed by Ockeghem himself, and consisting entirely of mensuration canons, [1] it has been called "perhaps the most extraordinary ...
The system of note types used in mensural notation closely corresponds to the modern system. The mensural brevis is nominally the ancestor of the modern double whole note (breve); likewise, the semibrevis corresponds to the whole note (semibreve), the minima to the half note (minim), the semiminima to the quarter note (crotchet), and the fusa to the eighth note (quaver).
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Mathematics in art: Albrecht Dürer's copper plate engraving Melencolia I, 1514. Mathematical references include a compass for geometry, a magic square and a truncated rhombohedron, while measurement is indicated by the scales and hourglass. [1] Wireframe drawing [2] of a vase as a solid of revolution [2] by Paolo Uccello. 15th century