Designing and Building a Low-Noise Hemi-Anechoic Chamber
Noise emission and noise control are common topics in the field of acoustics. Noise emission from devices needs to be measured to comply with noise standards and to develop quieter devices. To make these measurements, a quiet noise-controlled environment is required. A large convertible hemi-anechoic chamber was constructed at ETS-Lindgren's headquarters in Cedar Park, Texas for that purpose. The project was a noise control project unto itself with the goal to measure the noise produced by a wide variety of test specimens.