How to make flickering effect?

Unity Engine
1

I want to make flickering effect.

At first it start slow, but as time passes, flickering speed is increase.

How? renderer.enabled 's example is in 1 seconds.

But how to make flickering speed?

2

You could use a coroutine for this:-

function Flicker(duration: float) {
	var startTime = Time.time;
	var flickTime = 0.5;
	
	while (Time.time - startTime < duration) {
		renderer.enabled = false;
		yield WaitForSeconds(flickTime);
		renderer.enabled = true;
		yield WaitForSeconds(flickTime);
		flickTime *= 0.9;
	}
}