@conference{kleis1979transmission, title = {Transmission of Speech-and Music-Programme Automatically Controlled by Varying Environmental Noise}, author = {Kleis, Derk and van Gorsel, J. A. and Swarte, Peter}, booktitle = {Audio Engineering Society Convention 62}, month = {Mar}, year = {1979}, url = {https://www.aes.org/e-lib/browse.cfm?elib=2898} }