Sound is a mechanical wave that travels through a medium, such as air or water. In the context of planets, which are predominantly composed of solid or gaseous materials, sound waves would behave differently compared to their propagation through Earth's atmosphere. However, it's important to note that sound requires a medium to propagate, and space is mostly a vacuum where sound cannot travel.
In the case of a planet with an atmosphere, like Earth, sound waves can propagate through the air and interact with the environment. However, the effect of sound on a planet's rotation speed would be negligible. The rotation of a planet is primarily determined by its initial angular momentum and the conservation of angular momentum throughout its evolution. Sound waves would not have a significant impact on altering the rotation speed of a planet.
It's worth mentioning that extremely powerful acoustic energy, such as a massive explosion, might have some indirect effects on a planet, such as causing seismic vibrations or atmospheric disturbances. However, these effects would be temporary and localized, rather than influencing the planet's overall rotation speed.
In summary, while sound waves can interact with a planet's atmosphere and induce temporary effects, they would not have a substantial influence on the planet's rotation speed. Planetary rotation is governed by larger-scale factors and processes.