Before I begin, excuse me if any words or terminology is not used correctly.
Now said that, in the latest entry in the franchise Star Wars, The Last Jedi, we are shown in the starting itself that a group of people are on a planet preparing themselves. And all of a sudden a loud boom sound is heard to one of the people, who gets surprised and exclaims her fear.
In the next scene, we are shown a cloud trail in the sky. After that in the space we are shown a ship appearing suddenly, in a boom, followed by other ships.
So my question is - how loud is the boom sound when a ship appears? Has there been any mention of this in the series (irrespective of platform)? Because the people on the planet were able to hear it properly.