Chao Y.T.Yu Y.L.Yen J.Y.Li K.Lo Y.C.Liao Y.T.Lee L.C.KANG LI2019-11-252019-11-2520159781138027527https://www.scopus.com/inward/record.uri?eid=2-s2.0-84949870750&partnerID=40&md5=57b377312e4e2e1ad6f4e44dc5c5c87ahttps://scholars.lib.ntu.edu.tw/handle/123456789/432326Design of an advanced retractable multi-speaker headphoneconference paper2-s2.0-84949870750