OpenMusic Reference
mktree
mktree
(score module) -- Constructs a rhythm tree from a list of rational s (fractions)
Syntax
mktree rhythm timesigns
Inputs
| name | data type(s) | comments |
|---|---|---|
| rhythm | a list of rationals (fractions) | |
| timesigns | A list of integers or list of lists integers. See below |
Output
| output | data type(s) | comments |
|---|---|---|
| first | a rhythm tree |
Description
The mktree takes a list of fractions representing note values and converts them into a rhythm tree suitable for use in a Voice object. 1/4 represents the quarter note, 1/8 the eighth note, etc. Note that tuplets of all kinds are also permitted: 1/6 for quarter note triplet etc. Negative values will be transcribed as rests. Values which cross barlines or rhythmic groupings will be transcribed as the appropriate tied notes.
The timesigns input takes either a single time signature in the form (a b) or a list thereof, i.e. ((4 4) (3 4)). If a single time signature is specified it will be repeated as needed.
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This function was programmed by Orjan Sandred.
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Examples
Making a rhythm tree with mktree
Note that way that tuplets are represented in the third and fifth measures. The timesign (1 4) is repeated to the necessary length. The rhythm tree produced is:
? OM->(? (((1 4) (1)) ((1 4) ((1 (1 1)))) ((1 4) ((1 (1 1 1)))) ((1 4) ((1 (1 1 1 1)))) ((1 4) ((1 (1 1 1 1 1)))) ((1 4) (-1))))
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