@article{Chu_1995, title={A Unified Approach for the Two ASTM Standards for Impedance Tube Measurements}, volume={23}, url={https://jcaa.caa-aca.ca/index.php/jcaa/article/view/945}, number={3}, journal={Canadian Acoustics}, author={Chu, W. T.}, year={1995}, month={Sep.}, pages={69–70} }