Skin contact indirect vibration conductivity type electret Con Densamaiku and dynamics treble and the piezoelectric ceramic element and cartridge units additional use to increase the sound pressure of the microphone unit of the sealed case 2-way microphone

摘要

(57) [summary] [purpose] ambient noise in a closed microphone case, machine operating noise and wind noise Zatsuku enters the microphone sound, as can also be used as a further underwater microphone west, internal organs of the electret condenser microphone and dynamics microphone By adding the piezoelectric ceramic elements and cartridges as the microphone unit with the unit, and let raise supplement treble a tend for bass voices, the higher the lower the sound pressure, the properties of the skin-contact type sealing case vibration conduction sound microphone supplement I was the product of 2-way microphone system. . [Configuration] in order to supplement the often characteristics will treble and sound shortage by using the senses the vibration of the utterance of the vocal cords in a closed microphone case in the structure to be converted to a voice signal only conventional electret condenser microphone and dynamics microphone unit and the 2-way microphone system configuration of the product to obtain a high frequency range and high sound pressure by the use of different microphone unit of the two types is to add the piezoelectric ceramic element or cartridge.