Is sound waves subject to the law of conservation of energy?

Sound is a form of energy that cannot be created or destroyed. As a result, every word spoken by every human that entered this realm generated a sound. Their voices could have transformed into a different sort of energy.

Sound is an energy form. As a result, it becomes the law of energy conservation. Energy can't be formed out of thin air or vanish into thin air; all it can do is change forms.

Hence, Sound waves are subject to the law of conservation of energy.