25B6; adjective
never-ending noise : INCESSANT, continuous, unceasing, ceaseless, constant, continual, perpetual, uninterrupted, unbroken, steady, unremitting, relentless, persistent, interminable, non-stop, endless, unending, everlasting, eternal.
never-ending tasks : ENDLESS, countless, innumerable, untold, unlimited, limitless, boundless; poetic/literary myriad.