note-duration
v1.3.0
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Parse note durations
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note-duration
Parse note durations. It can convert from name to value and viceversa.
Usage
Install the node module: npm install --save node-duration
and require it from you file:
var duration = require('note-duration');
You can convert from names to values:
duration('long'); // => 4
duration('double'); // => 2
duration('whole'); // => 1
duration('half'); // => 1/2
duration('quarter'); // => 1/4
duration('eighth'); // => 1/8
duration('sixteenth'); // => 1/16
duration('thirty-second'); // => 1/32
From letter and dots to values:
duration("h"); // => 1/2
duration("h."); // => dot: 1/2 + 1/4
duration("h.."); // => double dot: 1/2 + 1/4 + 1/8
duration("ht"); // => triplet: (1/2 + 1/ 2) / 3
duration("q"); // => 1/4
duration("q."); // => dot: 1/4 + 1/8
duration("q.."); // => double dot: 1/4 + 1/8 + 1/16
duration("qt"); // => triplet: (1/4 + 1/4) / 3
From number string to value:
duration("2"); // => 1/2
duration("2."); // => dot: 1/2 + 1/4
duration("2t"); // => triplet: (1/2 + 1/ 2) / 3
duration("2.."); // => double dot: 1/2 + 1/4 + 1/8
duration("4"); // => 1/4
duration("4."); // => dot: 1/4 + 1/8
duration("4.."); // => double dot: 1/4 + 1/8 + 1/16
duration("4t"); // => triplet: (1/4 + 1/4) / 3
The duration.toString
method does the opposite: convert from value to letter and dots:
duration.toString(1/2 + 1/4); // => "h."
duration.toString(1/4 + 1/2 + 1/8); // => "q.."
License
MIT License