Question $2$c

Figure Q$2($c$)$ shows an impedance pneumography for long term monitoring of a patient's respiration.

Figure $02($c$)$

Question $2$c$($i$)$

Evaluate the role of the low$-$pass filter after the synchronous detector.

Question $2$c$($ii$)$

With the help of necessary waveform$($s$),$ analyze how the patient's respiration is monitored in an impedance pneumography.