AfterEffectsEasingFunction-to-Hype.js

amp = .09; // The larger the value, the greater the amplitude
freq = 2; // The higher the value, the higher the frequency
decay = 5; // The larger the value, the less the decay

n = 0; 
if (numKeys > 0){ 
n = nearestKey(time).index; 
if (key(n).time > time){ 
n--; 
} 
} 
if (n == 0){ 
t = 0; 
}else{ 
t = time - key(n).time; 
} 

v*amp*Math.sin(freq*t*2*Math.PI)/Math.exp(decay*t); 
 
// In Tumult Hype's Math function editor, we can extract this function, where T is the time as a percentage of the duration of the animation.  

function (t, start, dur) {
    var amp = .13; // The larger the value, the greater the amplitude
    var freq = .5; // The higher the value, the higher the frequency
    var decay = .4; // The larger the value, the less the decay

return t * amp * Math.sin(freq * t * 2 * Math.PI) / (decay * t); 

  }