private float blink(float alpha){
		this.alpha += this.velocity;
		if(this.alpha == 1){
			this.osc.getEnvelope().addSegment((float) 0.4, PApplet.map(this.alpha, 0, 255, 1.f, 2.f));
		}
		
		if(this.alpha >= 255 ){
			this.osc.getEnvelope().addSegment((float) 0.0, PApplet.map(this.alpha, 0, 255, 0, 0.5f));
		}
		
		if(this.alpha > 255 || this.alpha < 0){    
			this.velocity = -this.velocity;
			
		}
		return this.alpha;
	}