Design a circuit to implement both Bessel and Butterworth filters

The elimination or attenuation of interference noise from the received signal is a very important issue in signal transmission and processing. There has been a lot of work on the application and optimization of Butterworth and Bessel filters in various fields, but considering the different characteristics of Butterworth and Bessel filters and the different situations. This paper designs a circuit that can synthetically implement Butterworth and Bessel filters, and through the Multisim circuit simulation test, the test results show that the circuit has better performance.