| 摘要 |
An acoustic-to-electrical transducer (152) for sensing body sounds is disclosed. The transducer (152) comprises a diaphragm (2/202) that can be placed in direct contact with a body, whereby the diaphragm motion directly affects an electromagnetic sensing signal, which is then converted to an electrical signal representation of the diaphragm motion. Such sensing means (70) allows the diaphragm (2/202) to move freely without mechanical coupling to a secondary transducer, while providing a direct and further provides a means for using static diaphragm pressure to control gain and frequency characteristics of the electrical signal. The transducer provides methods for ambient noise reduction or applications such as well as means for simulating sound detection for applications such as medical education and testing. The sensor, circuitry, manufacturing methods and improvements are disclosed. |
