Software and Hardware Signal Filtering

Calculators to design and compare different types of filters.

Exponential Moving Average (EMA) Low-pass Filter

Notes

Passive Low-pass Filter

Notes

Low_pass_filter

TODO:

Passive 2nd order Low-pass Filter

Notes

Low_pass_filter

TODO:

Switched Passive Low-pass Filter

Notes

    This assumes the 'on' state capacitance is so much more that the filter resistance can be simplified to R+Ron. Same for the capacitances

TODO:

Filtered Resistor Divider

fc=(R1+R2)(103/10−1)2π∗R1∗R2∗C1≈(R1+R2)2π∗R1∗R2∗C1fc=\frac{(R_1+R_2)\sqrt{(10^{3/10}-1)}}{2\pi*R_1*R_2*C_1}\approx \frac{(R_1+R_2)}{2\pi*R_1*R_2*C_1}

Notes

TODO: