ELECTRO-ACOUSTIC CONVERTER, ELECTRONIC DEVICE, WATERPROOF COVER, AND METHOD FOR TESTING VENTILATION OF ELECTRO-ACOUSTIC CONVERTER

摘要

According to the present invention , water-resistant membrane electro-acoustic conversion device for attaching a state , waterproof film to an object to provide an electroacoustic transducer apparatus which can perform a test of passing the vent gas, and the case soak hole is formed, an electroacoustic conversion unit having a vibrating body is installed in the case , the electroacoustic transducer apparatus , the holes are covered with a waterproof membrane soak and constitutes a closed space by a , and outside of the closed space can be produced in the electroacoustic conversion unit is communicated by the vent hole test .