//static parameters
var startPointY:Number = 39; //starting position of each wave
var amplitude:Number = 30;
 
graphics.lineStyle(1.49, 0, 1);
 
//drawing the sine waves
for(var i:int=0; i<90; i++) {
    graphics.moveTo(0, startPointY);
    angle = -0.1;
    xpos = 0;
    period = 9;
 
    for(var j:int=0; j<1000; j++) {
        xpos++;
        ypos = startPointY - Math.sin(xpos/period) * amplitude;
        graphics.lineTo(xpos, ypos);
        period += 0.0325;
    }
 
    startPointY += 5.8;
}