What is the synonym for sound energy?

There isn't a single perfect synonym for "sound energy," as it's a specific type of energy. However, depending on the context, you could use:

* Acoustic energy: This is a more scientific and precise term.

* Sound waves: This emphasizes the nature of sound as vibrations traveling through a medium.

* Auditory energy: This focuses on the perception of sound by living organisms.

Ultimately, the best synonym will depend on the specific context of your writing.