I'm wondering about the sound properties are of a straw bale constructed building? I have an interest in building a small outbuilding that would be my office and possibly a small studio space for a band to practice -- drums, electric guitar, keyboard, etc. It won't be a recording studio space, per se, but space for a 3 or 4 people to get together and jam. Still, that creates quite a few db SPLs, so I'm looking for construction methods that will keep costs low, properly insulate the space and keep heating costs down, along with reducing sound levels that escape the space.
I live in the city so, reducing sound leakage to the neighbors would help me sell the idea to them, and maybe help them get involved with the project.