Under the general direction of the Operation Manager, responsible for the controlling receiving of F&B items and store inventories through timely feedback and reporting to maximize profitability.

Frequency Selective Filter (FS f) is utilized to design feedback controller in frequency do-main. For each disturbance frequency, there are only two real coefficients to be tuned.

In this paper we develop the voltage transfer function of the six order active passband filter with multiple path feedback and calculate the theoretical values for A-F and P-F response.