digital stethoscope - heart sound - click sound

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Ramdani Febrian

Joined Dec 12, 2016
6
i made a digital stethoscope using "untitle" circuit,
and i've record my heart sound,
but there's like click sound in recorded sound?
is that click sound?
is it come from circuit???
thanks in advance
 

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bertus

Joined Apr 5, 2008
20,092
Hello,

The coupling capacitors are a bit small.
I also hear a hum in the background.
This can likely be reduced with shielding if the wires to the microphone.

Bertus
 
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