I've had my AirPods for a couple of months now and just noticed that there is a slight hiss when I pause music. It last for about 10 seconds then it stops. I tested my friends and I was able to hear it as well. In addition, I can somewhat hear a hiss when listening to certain things like podcast. I've search other post and some say its normal and some say its not. I was wondering for those who had this problem and got a replacement, do you still notice it?