Sound proofing

Hello My name is Hannes, and i`m new here, so i hope i post these questions right. :) I`m building a "hobby" studio in my room, mainly to record my drumkit and guitar, and my biggest concern right now is to get my drumkit playble in my room without too much sound leaking out to disturb the neighbours. I`m not really sure what to do, so i appriciate all answers. My budget for this is around 3-400$ I´ll attach a pic i made of the room, not sure if it will help though. Thanks Hannes

Hannes, I'd suggest reading the stickies and generally doing more research. Stopping sound is not a simple (or cheap) task. For $300-400 you could probably make the room sound better inside, but I don't think you'll be able to achieve much isolation. You could insulate the room and that's about it for that budget. It'll help some to a point (maybe 3dB of reduction). Look at Sharward's thread and you'll see the lengths one must go in order to achieve good isolation.