The “lub-dub” sound is so recognizable that engineers use it to test medical simulators, and musicians have sampled it for ambient and electronic music (e.g., Dark Side of the Moon by Pink Floyd uses a synthesized heartbeat as a motif).
The "lub-dub" is far more than a simple noise; it is the sound of the heart's valves working in perfect synchronization to sustain life. By listening to the pitch, timing, and intensity of these sounds, medical professionals can gain critical insights into the health and efficiency of the human heart. nhlbi, nih (.gov)https://www.nhlbi.nih.gov How the Heart Works - How the Heart Beats | NHLBI, NIH lub-dub sound
: It occurs immediately after the atria have finished filling the ventricles. S2: The "Dub" The “lub-dub” sound is so recognizable that engineers