CWMC
Newbie level 5
I have a few questions regarding High pass and low pass filters when calculating a pulse rate.
Why is it that in this link, https://mikroelectron.com/Product/Finger-heart-rate-sensor
The cutoff frequency is set to 0.5Hz? Why did the capacitor and resistor be chosen for the HPF?
Also why does the gain and cutoff frequency have to be 48 and 3.4 Hz for the LPF?
What is the use of the potentiometer and why is it 10k?
Any help would be greatly appreciated.
Thanks
Why is it that in this link, https://mikroelectron.com/Product/Finger-heart-rate-sensor
The cutoff frequency is set to 0.5Hz? Why did the capacitor and resistor be chosen for the HPF?
Also why does the gain and cutoff frequency have to be 48 and 3.4 Hz for the LPF?
What is the use of the potentiometer and why is it 10k?
Any help would be greatly appreciated.
Thanks