pythagorean.js

pythagorean.js

function pythagorean(e){
    
    var frequency = e;
    var cents;
    // multiply/divide frequency until between 440 & 880
    for (let step = 0; step < 100; step++) {
            if (frequency < tuningHz)      { frequency = frequency * 2; }
       else if (frequency > tuningHz * 2)  { frequency = frequency / 2; }
       else                                { break; }
    }
    midPoints.some(function(v, i) {
        if (frequency < v) {
            
            // calulate cents
            cents = 1200 * Math.log2(frequency/targetFrequencies[i]);
            return frequency < v;
        }
    
    });
    
    return cents;

}