CaptainSpock
Junior Member level 3
Hi
Would like to ask if I can implement a notch filter using a KHN biquad filter (state variable), something like this **broken link removed**, at page 8. Meaning this would use 4 op-amps right? And what would the formula for the centre frequency be?
I'm actually designing a filter to eliminate 50hz ambient noise from a pulse oximeter system, open to any suggestions =)
Thank you.
Would like to ask if I can implement a notch filter using a KHN biquad filter (state variable), something like this **broken link removed**, at page 8. Meaning this would use 4 op-amps right? And what would the formula for the centre frequency be?
I'm actually designing a filter to eliminate 50hz ambient noise from a pulse oximeter system, open to any suggestions =)
Thank you.