The Secret of White Noise
Black noise is better than white noise. When the whites had first invented this new white noise technology, there was a war over it and they lost. In case all the parents involved got killed again and their children didn't know what happened, they had already named it White Noise for the future generations. Apparently all the blacks that were working with them had been blackmailed, arrested or killed one by one after they had won the last battle. Their kids had to grow up with no parents again.
White noise refers to forms of telecommunications that usually involve chip implants, but can also be done through laser-to-sound devices as well as other forms of technology. You can hear them, but there's no caller ID. It's all done wirelessly.
Black noise is when you talk to someone straight up.