Microphone detecting spoken information - is positioned inside human ear to receive sounds from body directly and is acoustically insulated from outside

摘要

The microphone is positioned in the ear so that it receives acoustic vibrations from the body directly and is acoustically insulated from the atmosphere and thereby from all external noise. It is not influenced by dust, moisture, or ear peculiarities. The wearer's ear is enclosed in cup (6). The microphone (2) is enclosed in a hermetically sealed sheath (4) of acoustically hard material and mounted on a support (19) that allows it to move in two orthogonal directions.