| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a stethoscope, obtaining not only right and left sound-field feeling but also up and down sound-field feeling, eliminating noise such as scratch sound of a sound collecting part, controlling excessive volume to protect user's ears, and also securing convenience. <P>SOLUTION: In this stethoscope including an electronic circuit, three or more, preferably four or more sound collecting devices and a microphone are held to listen to person's heart and breathing for auscultation in a stereoscopic sound field. Phase processing and equalizing are performed to narrow the focus and sound the heart and chest. The focal point can be manually operated by a user. Further, in some use, an outer facing is made lovely not to give a fear to the children and patients, and also the sound collecting part and the sounding part are connected to each other by radio. <P>COPYRIGHT: (C)2012,JPO&INPIT |
