[URGENT]Please help, people talking in my speakers!

Hello. Today suddenly I hear people talking in my speakers. The voice came from my speakers. The person(s) talk very dirty. They were constantly using words like f***, b**ch, @$$, etc. The volume of the voice(s) is rather small. I have my speakers' volume turned to the highest and could hear the voice clearly when I move my ears close to the speakers. I thought I got hacked, but I disconnected the Internet and did a virus scan and checked Task Manager and found nothing suspicious. Really can anyone help me with this please? My speakers are the 2 channel cheap ones (analog maybe?).