For the filter circuit shown below 2R3 R2+R3 Vz Vi (s) = 2R2 s2 C² R2+SCR- +1 R2 + R3 A. Derive the transfer function of Vx/Vi, assuming all the op- amps are ideal. B. What is the filter type and the order obtained from terminal X? C. Explain how to modify the given circuit to obtain a notch filter. Draw the new circuit

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Filter

A filter is a device or process which removes some of the unwanted features or components like frequencies from a signal in signal processing. The feature of filters is the complete or partial suppression of some part of the signal, and filtering is a class of signal processing. This most often means removing some frequency bands or some frequencies. In the frequency domain, the filters do not exclusively act, especially in the image processing field many other targets for filtering exist. Without having to act in the frequency domain, the correlations can be removed for certain frequency components and not for others. The filters are widely used in electronics and telecommunication, in television, radio, radar, audio recording, music synthesis, control systems, computer graphics, and image processing.