I like being loud and don't care about the neighbors.

However, I can also be quite, it takes me a lot more time to have an orgasm,  but they are a lot more intense. This can actually be a cool way for you and your husband to explore different sexual games and styles...

For instance, it's easier for me to be quite if I'm on top - more control on my movement, so more control over my noises. 

The important thing is for you to communicate with your husband, he's probably think something is wrong - you used to have loud orgasms and now you don't, I would think there's something wrong with me if my partner suddenly changed  their sexual patterns.

You cal always put on some music or a fan or space heater to produce white noise. If all all fails, and if you are into that, there's always the possibility of using a gag (get one with the foam ball, not plastic or wood) As I said - cool opportunity to explore new things.