Soundproofing One Wall, Soundproofing Options

[sethjacquay]

I am going to be moving into a new apartment next month and
my new landlords warned me about a dude in the building next door
who might complain about sound.

I am interested in soundproofing the wall that the neighbor and I share
probably about 10' by 8' in size.

Obviously, headphones would work, but when I am singing and playing
acoustic guitar I will feel better about letting loose with some sort
of sound barrier on that wall.

Any suggestions?
Does anyone else have some sort of setup they use?

I was thinking about those foam absorbers, but I read that they actually
don't block the sound and might actually cause him to hear more noise.

I am considering a vinyl barrier that would hang from the wall. It won't block everything
but should add another layer to help reduce the sound transmission directly through the wall.

[music3]

howdy, i've done some soundproofing of an old farmhouse. its more of a performance space that we throw mics in.some large poly-cylidrical defusers are used as well as styrofoam insalation on all serfaces including the subfloor. vulcanized rubber sheets are great for thin absorbment of sound. put it on the wall and increase the space as you go up to the ceiling. this helps break the 90degreee angle of wall to floor to ceiling that standing waves need to develop.stuff the cavity with fiberglass . also the use of old glass windows (in frame) to reflect the sound into the mics and give "natural sounding " mechanical monitors. one side is reflective glass, the other side is rubber sheet . make sure there is a sealed airspace between the sheet of glass and the sheet of rubber.then you have a movable dead or live side.sound actually travels through glass very fast.(that which is not reflected) more later.