2023年3月30日 · When people are evaluating building materials and acoustical products for sound reduction, they rely on the sound transmission class or STC rating of the product. By understanding this rating of materials, we know how much sound will be blocked from going through those materials.

Sound Transmission Class (STC ) is an integer rating of how well a building partition attenuates airborne sound. In the USA, it is widely used to rate interior partitions, ceilings and floors, doors, windows and exterior wall configurations (see ASTM International Classification E413 and E90).

Sound Transmission Class (or STC) is an integer rating of how well a building partition attenuates airborne sound. In the US, it is widely used to rate interior partitions, ceilings, floors, doors, windows and exterior wall configurations.

STC is an acronym for Sound Transmission Class, a numerical measure used to indicate the effectiveness of a partition in attenuating airborne sound. It is expressed on a scale of 0 to 100, with higher numbers indicating greater soundproofing capabilities.

This comprehensive article will not only explain what STC is but will also provide the STC ratings of common materials and discuss the complex process of determining which of these materials will best absorb sound in a given space.

Sound Transmission Class (STC) is a single number that describes the ability of a building material or partition to block airborne sound. STC is a laboratory test result defined by ASTM E413 for sound transmission loss testing performed according to ASTM E90.

2025年3月7日 · Sound Transmission Coefficient (STC) – otherwise known as “Sound Transmission Class” – is the golden standard that evaluates how well a barrier, be it a wall, ceiling, door, or window, reduces airborne sound.

2025年3月22日 · What Does STC Rating Mean? STC stands for Sound Transmission Class—it’s a number from 0 to 100 that shows how much airborne sound a barrier stops. A wall with an STC of 50 cuts noise by about 50 decibels—think a loud …

2025年3月18日 · Industrial Vs. Residential STC Ratings. It's important to note that STC ratings for industrial sound barriers are often lower than those for residential sound barriers, which can cause confusion. In your research on STC, you’ll see articles that list STC-25 at the lowest end of the spectrum. That doesn't mean STC-25 products are ineffective.

The higher the STC rating, the better the material prevents sound from passing through interior spaces. STC rates sound transmission over a frequency range (from 125 to 4000 hertz) and is applicable to mid- to high-frequency noises, such as conversations, music, television and more. These ratings are vital in buildings where noise control is ...