What is another word for sound transmission class?
Pronunciation: [sˈa͡ʊnd tɹansmˈɪʃən klˈas] (IPA) 
Sound transmission class (STC) is a measure of how well a building material can block sound from traveling through it. There are various synonyms for STC, such as sound attenuation, sound insulation, soundproofing, noise reduction, and acoustic barrier. These terms are used interchangeably in the construction industry when referring to a material's ability to absorb or reflect sound waves to prevent them from passing through walls, floors, and ceilings. Other related terms include decibel reduction, sound absorption coefficient, and sound transmission loss. Acoustic engineers use these terms to design soundproofing solutions for various spaces, such as recording studios, conference rooms, and home theaters, to ensure optimal sound quality and noise reduction.
