@conference{fielder2019perceptual, title = {Perceptual Assessment of Distortion in Low-Frequency Loudspeakers}, author = {Fielder, Louis and Smithers, Michael}, booktitle = {Audio Engineering Society Convention 147}, month = {Oct}, year = {2019}, url = {https://www.aes.org/e-lib/browse.cfm?elib=20615} }