A "steady beat" refers to a regular, consistent rhythm or pace in music or any repetitive action. It is the consistent pattern that helps establish the timing and structure of a piece of music or movement. Full definition
An amplified pulse monitor, sounding steady beats, goes silent, and the operating room is quiet except for the whirring sounds of the heart - lung pump motors. (discovermagazine.com)
However, in deviating from a perfectly steady beat, one professional drummer makes patterns in his timing and loudness that have a particular mathematical form — a fractal — a new study shows. (sciencemag.org)