What ultimately becomes of the energy of sound in the air

Solution 18RQ Sound energy is created by mechanical waves vibrating in the medium, which gets converted into the internal energy of air molecules. Sound waves exert a push in the air medium, then gradually the amplitude and intensity of the sound wave gets decreased. But energy conservation should not be violated. This leads to the increase in internal energy of the air molecules. At a long distance from the source of sound wave, it will not be audible anymore. Because all the sound energy would have converted to the internal energy. This phenomenon is also called damping or damped oscillation. So, ultimately the sound energy will get converted into the internal energy of the air molecules.