Treasury of Scripture Knowledge
When they moved, I heard the sound of their wings -- it was like the sound of rushing waters, or the voice of the Almighty, or the tumult of an army. When they stood still, they lowered their wings.
The sound of the wings of the cherubim could be heard from the outer court, like the sound of the sovereign God when he speaks.
2 Samuel 5:24
When you hear the sound of marching in the tops of the trees, act decisively. For at that moment the Lord is going before you to strike down the army of the Philistines."
And the noise
When the cherubim moved, the wheels moved beside them; when the cherubim spread their wings to rise from the ground, the wheels did not move from their side.