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motivejs
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JavaScript music theory library
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motivejs
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# motive [](http://badge.fury.io/js/motive) > JavaScript music theory library ## Install and Use ### node: ``` bash npm install motive # OR yarn add motive ``` ``` javascript var motive = require('motive'); ``` ### browser: There is a UMD build of the library available in the [dist](dist) directory. ``` html <script src="path/to/motive.umd.js"></script> ``` This will expose `motive` in the global namespace. alternatively, you can require `motive.umd.js` as an AMD module. If you still use Bower, you can also install motive this way: ``` bash bower install motive ``` ## Examples _**update 0.2.1** you now have direct access to the `Note`, `Interval` and `Chord` classes so they can be extended. These can be found under `motive.constructors`._ create a note: ```javascript var myNote = motive.note('Bb'); // you now have some info about your note myNote.type; // 'note' myNote.pitchClass; // 10 myNote.isEnharmonic('A#'); // true myNote.intervalFrom('Eb'); // 'P5' myNote.intervalTo('C'); // 'M2' ``` set the note's octave to make it an exact pitch: ```javascript myNote.setOctave(3); // now that it's a pitch you have some additional info myNote.type; // 'pitch' myNote.midi; // 58 myNote.frequency; // 233.0818.... ``` make a new note by transposing: ```javascript var otherNote = myNote.up('P5'); // this creates a new note up a perfect fifth from your first note otherNote.name; // 'F' otherNote.octave; // 4 ``` create a chord: ```javascript var myChord = motive.chord('Dm7'); // the root is a motive.Note object myChord.root; // '[note D]' myChord.intervals; // [ 'R', 'm3', 'P5', 'm7' ] // this is an array of motive.Note objects representing the members myChord.notes; // [ '[note D]', '[note F]', '[note A]', '[note C]' ] ``` ## Contributing See the notes in the [README](src/README.md) for the **src** directory. ## License Copyright (c) 2014 John Shanley. Licensed under the [MIT license](LICENSE-MIT). Project created by [John Shanley](https://github.com/jshanley).
