The barrages batter the walls as hard as they could. Though most shots from the trebuchets and ballistas mostly missed or landed in front or behind the city walls.
The sounds that you heard were those of stone battering stone or the shattering of the rooftiles as the boulders plunged themselves through the defences; the garrison, in the meantime, scrambled back and forth in an attempt to somehow counteract the heavy equipment you had brought forth. But aside from a few potshots, they didn't have the ability to really reach you. For that, they would need to commit to either a sally or a raid, which they seemed to be unwilling to do for now.
The siege towers began to arise in earnest. You had climbed to the top of one as they were installing the rope for lowering the gangplank for the assaulting; one thing that you were missing in the supply side of things was the hides necessary for fireproofing both the towers and the battering ram. Without the hides, or some substitute like metal, though that would encumber the already lumbering engines even more, there was a serious risk of the tower being set ablaze by the enemy if you weren't careful.
To that end, you had sent out the horsemen and some of the archers, along with the quartermaster to procure the hides, either by buying them or confiscating the hides or the animals. But it would take a while for them to procure the necessary amount of hides for the engines.
At present the section of the wall you have under bombardment is bruised; it will take a while to take down.
If you were to assault the walls right now, it would be 30 DC (base 50 DC - 25 due to vulnerable siege engines, + 5 due to bruised walls).
Raymond's advance is at 0/10.
It will take 1 turn for ladders to be built. (+3 to the assault DC.)
It will take 2 turns for enough hides to be collected. (+10 to assault DC by mitigating the vulnerability of the engines.)
It will take 4 turns for a specially made ram head to be delivered. (+5 DC due to the upgrade to the battering ram.)
It will take 6 turns for additional artillery to be constructed. (+10 DC when bombarding the walls.)
Would you like to attack now or wait?
>Attack
>Wait