Standards and Testing of Sound BarriersThe effectiveness of a sound barrier cannot be assessed by design or materials alone—it must be verified with internationally recognized test results. Acoustic Laboratory Thailand Co., Ltd. (ALT) offers expert sound barrier testing in a laboratory setting (Lab Test) according to the following international standards: Laboratory Test 1. Sound Transmission […]
Acoustic Laboratory Thailand (ALT) uses a Moving Microphone to test Airborne Sound Insulation (STC, Rw) to achieve the highest level of accuracy in acoustic testing. Measuring the Sound Transmission Class (STC) is a crucial process for evaluating the sound insulation performance of materials and structures according to ASTM E90 and ISO 10140-2 standards. Typically, STC
Using a Moving Microphone in Testing STC for Material Sound Insulation Read More »
Sound Absorption What is Absorption? Absorption refers to the process by which a material, structure, or object takes in energy when waves are encountered, as opposed to reflecting the energy. Part of the absorbed energy is transformed into heat and part is transmitted through the absorbing body. The energy transformed into heat is said to have been ‘lost’. (e.g. spring, damper etc.) What is Sound Absorption?
