robes;Ratings;Specification (approval);Test signals;Testing【摘要】: Applies to instruments designed primarily for the measurement of acoustic impedance/admittance in the human external acoustic meatus using a stated probe tone. It is recognized that other probe signals may also be used. The standard defines the character【中国标准分类号】: N65【国际标准分类号】: 13_140【页数】: 66P.;A4【正文语种】: 英语 | 欢迎光临 世界资料网论坛 (http://bbs.infoeach.com/) | Powered by Discuz! X2.5 |