Экспрешн:

delay = 0;
myDelay = delay*textIndex;
t = (time - inPoint) - myDelay;
if (t >= 0) {
freq =2.5;
amplitude = 150;
decay = 7.0;
s = amplitude*Math.cos(freq*t*2*Math.PI)/
Math.exp(decay*t);
[s,s]
}
else {
value
}