Different types of tree frogs calling back and forth?

[John]

They wouldn't call to each other. It's probably atmospheric conditions/the weather causing them to want to croak.

[LilyPad]

That makes sense John. It's a very stormy day and I've had the windows open all day. I know some frogs respond to the sound of the vacuum and stuff, so I wondered if it was possible the call from the other frog was triggering their call. But considering neither of their voices have broken yet, they're not very loud.