"No, I understand. There was sound, but...so much of it was fake. Or absent. And always that sound of the boat in the back, that hum, sort of like..."

She does her best impression of the low, rumbling hum that had been constant, some imitation of how a boat should sound but never varying. Day and night, in the background.

"It messed with how things should be. You know how much is absent, but when it's back, it comes all at once, not gradually. It gave me such a headache, until I remembered how to filter it."