Testing of STC (Sound Transmission Class) and Rw (Weighted Sound Reduction Index)
Sound Transmission Class and Weighted Sound Reduction Index test Acoustic Laboratory Thailand Co., Ltd. (ALT) provides sound insulation testing services for wall systems, doors, windows, and glass according to international standards ASTM E90 and ISO 10140-2. The tests are conducted using the Twin Reverberation Chambers method, with completely isolated chambers. Our test facility is designed […]
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