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 to accommodate a wide range of materials and structures, offering precise, fast, and internationally compliant testing. It is ideal for architects, engineers, and product developers in the industrial sector who require acoustic data for effective design and product development.
Confidence in the Accuracy and Precision of Test Results
To ensure the correctness, precision, and reliability of test results, our laboratory operates under a quality system in accordance with ISO/IEC 17025:2017. All equipment and testing systems are regularly calibrated, with traceability to trusted standardization bodies.
In addition, every material submitted for testing undergoes a post-installation inspection by acoustic engineering specialists. This is further supported by the use of an array microphone system to detect sound leakage points, ensuring that the test results fully and accurately reflect the true performance of the material or system.
Who Is It suitable for?
Our testing services are designed to meet the needs of a wide range of sectors, including:
- Designers of building sound control systems
- Manufacturers of soundproofing materials or panels
- Producers of prefabricated walls, soundproof doors, windows, and glass
- Researchers and developers in the field of acoustics
- Engineers or project supervisors seeking technical data for design or material quality certification
We are proud to support the development of innovative, high-quality acoustic solutions that meet international standards.