It was Much quieter. The reason this is true is because if you were to say it is more quieter, it wouldn't make sense. It would make more sense to say it was more quiet.
Up, aside (I think, but I’m pretty sure)
The play's villain, Iago, is the epitome of dishonesty and his untruthful nature is contrasted with the innocent Cassio and Desdemona. He uses his skills in deception to lie to almost every other character in the play in particular Othello, but also to Roderigo and Cassio.