How To Sound proof walls

"Building Soundproof Walls

The partition walls in most family homes are constructed of drywall (sheetrock) firmly attached to both sides of a wood or metal stud frame. When sound waves hit one side of the wall it causes the drywall on that side to vibrate. Since the drywall is rigidly connected to the stud frame, the vibration is transmitted right through the studwork to the drywall on the other side. Those same vibrations traveling through the studwork can also channel noise throughout adjacent floors and ceilings. Noise will radiate easily through the structure because there's almost nothing there to cushion and absorb the sound waves.
At the introduction to this series we discussed some rather inexpensive solutions for sound control that produce fair to good results, the following solutions are a little more costly but more effective."

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