//大きさのバウンス freq = 3;decay = 5; n = 0;if (numKeys > 0){ n = nearestKey(time).index; if (key(n).time > time) n--;}if (n > 0){ t = time - key(n).time; amp = velocityAtTime(key(n).time - .001); w = freq*Math.PI*2; value + amp*(Math.sin…