No, depends on what living thing you are talking about.
S1 makes a "lub" sound. It is the first heart sound in a normal rhythm. The sound is produced when the AV valves close.
The sound coming from your heart is the sound of the valves in the heart closing and the turbulence in the blood that results. In a normal healthy adult the first sound (or lub) is from the closing of the AV valve and the second sound (or dub) is from the closing of the semilunar valve.
The first Korotkoff sound is the sound produced by the turbulence of the AV (atrioventricular valves) closing specifically the tricuspid and mitral valves. The second Korotkoff sound is produced by the closure of the aortic and pulmonary valves. You can hear a splitting of the second heart sound in a highly efficient heart.
eardeafening sound
In healthy adults, there are two normal heart sounds often described as a lub and a dub, that occur in sequence with each heart beat. These are the first heart sound (S1) and second heart sound (S2), produced by the closing of the AV valves and semilunar valves respectively.
By air splitting.
A heart murmurs is an abnormal sound consisting of a clicking, rushing, or gurgling noise that either is heard before, between , or after the normal sounds, or may may mask the normal heart sounds.
slow
A normal heart beat generally consists of 2 distinct heart sounds, informally termed 'lub' and 'dub'. The first heart sound (lub) occurs at the beginning of the heart contraction (systole) and is the sound of the valves between the atria and ventricles closing. The second heart sound (dub) occurs at the end of the contraction, and is the sound of the valves between the major arteries and the ventricles closing.
The "lub" sound of our heartbeat, known as the first heart sound (S1), is primarily caused by the closure of the atrioventricular (AV) valves—the mitral and tricuspid valves—during ventricular contraction (systole). When the ventricles contract, blood is pumped out of the heart, and the sudden closure of these valves creates a distinct sound. This sound is essential for indicating that the heart is properly pumping blood and is part of the normal cardiac cycle.
No Sound But a Heart was created in 1987.
Sound of My Heart was created in 1989.