@conference{tsunoda2015a, title = {A Headphone Measurement System Covers both Audible Frequency and beyond 20 kHz}, author = {Tsunoda, Naotaka and Hara, Takeshi and Nageno, Koji}, booktitle = {Audio Engineering Society Convention 139}, month = {Oct}, year = {2015}, url = {https://www.aes.org/e-lib/browse.cfm?elib=17933} }