Abstract:
Cardiac murmurs are the sounds produced by the
abnormal passage of the blood flow inside the heart due to the
diseased valves or tissues. Identifying the type of the murmur can
diagnose the cardiac pathology related to that particular
murmur. This paper describes a researched digital stethoscope
that can be used as a stethoscope as well as a murmur
identification device. To capture the heart beat, a chest piece of a
traditional stethoscope is used with a condenser microphone
attachment. Then the signal is amplified and Alters out the noise
and sent to the ARM processor. At the processing module,
sampling is carried out and stores the sampled data if the data
transmission is not being done. Then the sampled data is
transmitted to a central location using radio frequency
transmitter module to carry out the signal processing. If the user
wishes, the signal processing can be done in the stethoscope itself
since the ARM processor is in the stethoscope unit.
