Portable multifunctional electronic stethoscope

In view of the limitation of current medical stethoscope function simple, and cannot store weak signal of the human body. Designed a portable multi-function wireless transmission electronic stethoscope, this design used British CSR's CSR8670 Bluetooth chip as the master control chip, combined with Filtering algorithms and SD card storage technologies. It implemented many functions such as real-time heart sound, core heart sound, lung sound, core lung sound, bowel sound and fetal sound auscultation, recording and playback. Through experiments, the system can accurately separate the sound signal of different frequency bands and highlight the sound signal of the selected frequency bands.