@typedin/music-utilities
Version:
A set of resources and modules I use to develop music applications.
51 lines • 1.87 kB
JavaScript
import { getAlterationForAugmentedInterval, getAlterationForDiminishedInterval, getAlterationForMajorInterval, getAlterationForMinorInterval, } from "./getAlteration.js";
import { getName } from "./getName.js";
import { getNoteOctave } from "./getNoteOctave.js";
const specialCases = {
up: ["E", "B"],
down: ["C", "F"],
};
const notesThatMakeOctaveChange = {
up: ["B"],
down: ["C"],
};
const semitones = {
special: {
up: 1,
down: 11,
},
normal: {
up: 2,
down: 10,
},
};
function DiminishedSecond(note, direction = "up") {
return {
name: getName(note, direction, semitones, specialCases),
alteration: getAlterationForDiminishedInterval(note, direction, specialCases),
octave: getNoteOctave(note, notesThatMakeOctaveChange[direction], direction),
};
}
function MinorSecond(note, direction = "up") {
return {
name: getName(note, direction, semitones, specialCases),
alteration: getAlterationForMinorInterval(note, direction, specialCases),
octave: getNoteOctave(note, notesThatMakeOctaveChange[direction], direction),
};
}
function MajorSecond(note, direction = "up") {
return {
name: getName(note, direction, semitones, specialCases),
alteration: getAlterationForMajorInterval(note, direction, specialCases),
octave: getNoteOctave(note, notesThatMakeOctaveChange[direction], direction),
};
}
function AugmentedSecond(note, direction = "up") {
return {
name: getName(note, direction, semitones, specialCases),
alteration: getAlterationForAugmentedInterval(note, direction, specialCases),
octave: getNoteOctave(note, notesThatMakeOctaveChange[direction], direction),
};
}
export { AugmentedSecond, MajorSecond, MinorSecond, DiminishedSecond };
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