骨导听力在19世纪末已被提出,但是骨导听力的临床检测仍局限在与气导检测相同的频率。关于骨导听力的基本原则以及人颅骨的振动方式研究也仅限于7KH_Z 以下频率。很少有人知道关于超声波(20KH_Z 以上)刺激感觉 Bone conduction hearing was proposed at the end of the 19th century, but clinical testing of bone conduction is still limited to the same frequency as air conduction testing. The basic principle of bone conduction and human skull vibration mode is also limited to the following 7KH_Z frequency. Few people know about the sense of ultrasound (20KH_Z above) stimulation