@typedin/music-utilities/dist/frequency-calculator/index.js

A set of resources and modules I use to develop music applications.

import { intervalAnalyzer } from "../interval-analyzers/index.js";
export function calculateFrequency(reference, note) {
    const interval = intervalAnalyzer(reference, note);
    if (!interval) {
        throw new Error(`Could not calculate frequency for: ${note}`);
    }
    if (intervalAnalyzer(reference, note)?.direction == "down") {
        return reference.frequency / Math.pow(1.059463, interval.halfsteps);
    }
    return reference.frequency * Math.pow(1.059463, interval.halfsteps);
}
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