Creating a sound-proof dome
To get a totally sound-proof space whatever the requirements may be.....I'd suggest a rather bizarre solution to that, may you like it someday.
Let's make a dome with sound proofing materials like acoustic polyester or rigid fibre-glass insulation . Now let's build the outside layer for our dome.
We will to your surprise use magnetic materials. Let's put it in this way,...we will take a sphere and outside...
