Скачать или смотреть Soundproofing: STC Ratings (Part 1 of 2) - how they get them and what they mean

Standards are developed to have a standard, but they aren't really developed to work the same in the real world. The soundproofing rating (STC) is created by scientists in a controlled environment. Application rarely if ever matches the lab.

Also, the types of noise you are trying to remove or block varies from application to application. The types of sound nextdoor to your application may be high - like the tapping of a cobbler on a shoe - or low, like Michael Bay's personal edit suite.

Also, it's time to RANT! There's a warning, watch it or your kid's heads may explode from valuable and ranty ranting. It is actually dangerous? You tell us, is the hard truth dangerous?!?!?!? (Mass Loaded Vinyl Story)

Uhoh, you gotta watch now, dontcha!?!?
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Any attempt to soundproof a room comes with the challenge of merging lab-tested simulations and the reality of the room that you are creating (or modifying). You may be familiar with something called MSDS Material Safety Data Sheets

MSDS shows up in construction, a lot. Acoustical products, or put differently, products that end up being used in acoustical applications, have all sorts of acoustical information (like STC Ratings; STC = Sound Transmission Coefficient) that can be evaluated and applied in design.
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Join Seth Waltz from AVL Designs as he reviews some real-life cases where lab test information and application both align and misalign in various ways. A key takeaway you'll find is that installation, strategies, and material vary from contractor to contractor and from situation to situation.
No final installation will absolutely and perfectly match, lab tests. Learning to understand the potential variations and work with the likely situations is what an acoustical consultant can help you do. Contact https://www.AVLDesigns.com​ to discuss your next project.