I couldn't hear what they were saying because of the engine noise.

He was trying to keep the engine noise down as well.

Then they were kept up one night by engine noise.

The engine noises were lower and very different from what they had been.

Because of the engine noise, I couldn't make out her words.

Jones couldn't tell, over the engine noise, if they were talking or not.

The engine noise made it clear that we were operating on only one.

He leaned forward and raised his voice, to be heard above the engine noise.

He had to yell to make himself heard over the engine noises.

The engine noise forced any thought other than survival out of my head.