Largely true, although eventually you'd wonder why it sounded so awful when you tried to create infinitely-narrow filter passbands. In this case, if you'd know

Largely true, although eventually you'd wonder why it sounded so awful when you tried to create infinitely-narrow filter passbands. In this case, if you'd known there was such a thing as time-frequency uncertainty, you'd never have needed to ask the question in the first place.