react-orchestra
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A toolbox to build interactive and smart instruments on the web and mobile.
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<title>JSDoc: Source: helpers/getNoteNamesFromIntervals.js</title>
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<h1 class="page-title">Source: helpers/getNoteNamesFromIntervals.js</h1>
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<pre class="prettyprint source linenums"><code>/* mod */
import NOTES from '../constants/NOTES';
/**
* Get unique note names from array of note objects or note names
* @function
* @name getNoteNamesFromIntervals
* @param {string} noteNameWithOctave - note name with octave e.g. 'A3'
* @example
* getNoteNamesFromChordName('A3', [0, 2, 3]) // returns ['A3', 'B3', 'C3']
* // Full list of supported chords in src/constants/CHORDS.js
* @return {array} notenames
*/
const getNoteNamesFromIntervals = (firstNoteName, intervals) => {
const octave = firstNoteName.substring(firstNoteName.length - 1, firstNoteName.length);
const firstNoteIndex = NOTES.indexOf(firstNoteName.substring(0, firstNoteName.length - 1));
const notes = intervals.map((interval) => {
const noteIndex = (interval + firstNoteIndex) % 12;
return `${NOTES[noteIndex]}${octave}`;
});
return notes;
};
export default getNoteNamesFromIntervals;
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<h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="Instrument.html">Instrument</a></li><li><a href="Note.html">Note</a></li></ul><h3>Global</h3><ul><li><a href="global.html#addOctaveToNoteName">addOctaveToNoteName</a></li><li><a href="global.html#getInterval">getInterval</a></li><li><a href="global.html#getIntervalPermutationsFromNoteNames">getIntervalPermutationsFromNoteNames</a></li><li><a href="global.html#getJSONFromMidiURL">getJSONFromMidiURL</a></li><li><a href="global.html#getNoteNamesFromChordName">getNoteNamesFromChordName</a></li><li><a href="global.html#getNoteNamesFromIntervals">getNoteNamesFromIntervals</a></li><li><a href="global.html#getScaleNotes">getScaleNotes</a></li><li><a href="global.html#getScalesFromNoteNames">getScalesFromNoteNames</a></li><li><a href="global.html#getTracksAndMetaFromParsedMidi">getTracksAndMetaFromParsedMidi</a></li><li><a href="global.html#getTracksAndMetaFromUrl">getTracksAndMetaFromUrl</a></li><li><a href="global.html#getUniqueNoteNames">getUniqueNoteNames</a></li><li><a href="global.html#getUniqueNoteNamesNoOctave">getUniqueNoteNamesNoOctave</a></li><li><a href="global.html#isInHigherOctave">isInHigherOctave</a></li><li><a href="global.html#removeOctaveFromNoteName">removeOctaveFromNoteName</a></li><li><a href="global.html#reOrderNotes">reOrderNotes</a></li><li><a href="global.html#updateTempo">updateTempo</a></li></ul>
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Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.4.3</a> on Sun Nov 20 2016 16:43:09 GMT+0200 (EET)
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