专利名称：A HEARING TESTING DEVICE发明人：Esnouf, Philip Stuart申请号：EP05729501.6申请日：20050408公开号：EP1791468A1公开日：20070606
摘要：A hearing testing device (2) for self-testing the hearing of a subject including: anearpiece housing (4); a loudspeaker (46) located within the housing; and control circuitry(14) coupled to drive the loudspeaker, the control circuitry being arranged to produce asequence of test signals which are inputted to the loudspeaker to produce a series oftones at frequencies corresponding to said test signals wherein said test signals do notinclude significant harmonic components.
申请人：Esnouf, Philip Stuart
地址：484 Swan Street Richmond VIC 3121 AU
国籍：AU
代理机构：Pluckrose, Anthony William
更多信息请下载全文后查看
因篇幅问题不能全部显示，请点此查看更多更全内容