Loudly is an adverb. Use it to say that someone is talking loudly: - I can't concentrate because you're talking too loudly. Loud is sometimes used as an adverb in more informal speech, but it's normally used as an adjective to say something makes a big noise. - There was a loud crash (adj) - I can hear loud talking (adj) - Do you have to talk so loud (adv inf.) Aloud is an adverb meaning to talk loudly - not whisper or speak really quietly): - He read the text aloud to the class. - Please read the note aloud.

This is a response to the other guys answer Don’t put too in front of loudly just use loudly. They loudly talk about the work schedule . And instead say I can’t concentrate because your talking too loud

Duncan’s answer is perfect.

Talk aloud is not correct. Aloud is used for the difference between reading silently and saying the words when reading. If you say the words you are 'reading aloud'