zero crossing

A point where a function's graph intersects the x-axis, meaning the function's output…A point where a function's graph intersects the x-axis, meaning the function's output (or sign) changes from positive to negative, or vice-versa, passing through zero; used in signal processing, electronics, and audio analysis for tasks like frequency measurement, noise reduction, and differentiating sound types, as it marks significant transitions in waveforms and data.