Hello,
I've made an analog filter with the following specs:
4th order lowpass butterworth
Passband 500hz
Stopband 4500hz
-75dB at stopband
To now get this into digital i have performed a BLT transformation to get the coefficients.
However implementing the filter to have the same specs is still a bit difficult.
I have a 32mhz MCU and a 12 bit adc which is the input of the filter.
To get this filter to work is it just a matter of sampling fast enough en then applying the digital filter with the direct form 1 or 2.
Or is there something else that's needed?
And will i need an anti aliasing filter if i sample at about 10000 samples.
I've made an analog filter with the following specs:
4th order lowpass butterworth
Passband 500hz
Stopband 4500hz
-75dB at stopband
To now get this into digital i have performed a BLT transformation to get the coefficients.
However implementing the filter to have the same specs is still a bit difficult.
I have a 32mhz MCU and a 12 bit adc which is the input of the filter.
To get this filter to work is it just a matter of sampling fast enough en then applying the digital filter with the direct form 1 or 2.
Or is there something else that's needed?
And will i need an anti aliasing filter if i sample at about 10000 samples.