| 摘要 |
PURPOSE:To enable the mutual radio communication to an outside person while the user using his or her both hands, by performing the transmission/reception through a both-ear allotment system with an ear microphone attached to an ear and a speaker of the reception system attached to the other ear. CONSTITUTION:An ear microphone 1 incorporating a piezoelectric element 2 which functions as a vibration pickup and an earphone type speaker 3 are attached to both ears, respectively. At the same time, a radio device containing transmitting/receiving system parts is used via a portable device 4. The microphone 1 has an ear piece 15 which is unified with an ear piece base part 14 positioned at the outside of an external auditory miatus and at the base edge of an ear piece inserting part 13 having a sensor part 12 which is inserted to the external auditory miatus and senses the bone-transmitted audio signals of the user himself. The piece 15 contains the element 12 which functions as a vibration pickup. |
