In a new house I saw fiberglass bats between the studs on a shower-room to hall landing wall, and was told it was to reduce sound transmission.
I always understood that when combatting sound transmission the best is discontinuity, next best is heavier weight construction, and lastly its sealing off sound passages.
At the new house there was no discontinuity, no extra thickness wall board and there was a big air gap under the dooor.
Does anyone know of any white papers that measures the reduction of sound transmission using quilt in a real house (not a lab)?
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