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.

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. Essentially, it’s the report card of a structure’s ability to reduce noise. Higher ratings mean a greater resistance to sound penetration.

Download our comprehensive chart, featuring STC ratings for commonly used materials

2022年3月22日 · Learn what you need to know and check out our STC rating chart today! While originally developed for speech privacy, sound transmission class (STC) ratings have become a standard of design for spaces where acoustics are a concern and the most common sound reduction measurement in use today.

Tested under ASTM E90, laminated outside pane consisted of either 1/8"-0.030" P.V.B. -1/8" (total 1/4" thick), 1/4"-0.030" P.V.B. -1/8" (total 3/8" thick), 1/4"-0.030" P.V.B. -1/4" (total 1/2" thick), 1/4"-0.030" P.V.B. -1/2" (total 3/4" thick), panels caulked in place in single frame with wooden stops and glazing putty.

2020年1月1日 · Referring to the typical STC 30 rating chart below, STC is determined by testing sound transmission decibel loss at 16 standard frequencies from 125 to 4000 Hertz (Hz). STC primarily measures airborne sound; however, structure borne sounds are also measured in the low frequencies below 300 Hz.

A sound transmission class chart is a simple way to understand the decibel scale and its relation to STC ratings. A higher sound transmission class rating indicates more effective sound insulation than a lower number.

STCratings have been determined from TL data using ASTME413. See Section 3 for actual TLdata. Estimated. Computation based on a one-third octave band TL at 80 Hz (which was not measured in the laboratory) that is equal to the 100 Hz one-third octave band TL minus 2dB. The overall heat transfer coefficient in BTU/hr/sq ft/¡F.

2021年3月5日 · STC stands for sound transmission classification. This rating is given to materials that are tested over a range of frequencies, and are proven to block sound in some capacity. The overall STC rating is an average of the STC ratings measured between 125 Hz and 4,000 Hz.

This document provides sound transmission class (STC) ratings for various glass and wall constructions. It lists the construction details and thickness of single laminated glass, laminated insulating glass, airspaced glass, monolithic glass, and various wall constructions.