VIBRATION PICKUP TYPE EAR MICROPHONE FOR SINGLE-EAR HANDSET

摘要

PURPOSE:To prevent the fluctuation of performance and to increase the impact resistance, by setting an adaptor having a sound discharge hole at the its tip and loaded to the external auditory miatus with a space formed at the outer circumference surface of a projected part incoroporating a vibration pickup element. CONSTITUTION:A vibration pickup element 1 which picks up the bone transmitting audio signal of the wearer of an ear microphone that transmits the external auditory miatus is fixed into a projected part 3 of a main body 2 by a fixing element 4 and via a space g1. An adaptor 8 forms a space g2 at the outer circumference surface of the part 3 and is attached detachably to the main body 2. A sound discharge hole 9 is provided at the tip of the adaptor 8. An end of a flexible sound guide tube 10 is connected to an external loundspeaker, and the other end 11 is attached at the lower part of the main body 2. The outlet of the tube 10 links an internal space G of the main body 2, and the space G links a through-hole g2 leading to the external auditory miatus.