High Pass Filter using Hamming Window Function

HIGH PASS FILTER USING HAMMING WINDOW FUNCTION Summary: A high-pass filter (HPF) allows signals with frequencies higher than a certain cutoff frequency to pass through while attenuating lower frequencies. In digital signal processing, such a filter can be designed using the window method, where an ideal filter’s impulse response is truncated and shaped by a window function. The Hamming window is commonly used for this purpose due to its good frequency response—offering a balance between main-lobe width and side-lobe attenuation. This process involves designing an ideal HPF in the time domain, multiplying it by the Hamming window to control leakage, and then implementing it digitally. A step-by-step design example is provided at the end. What Is a High-Pass Filter? A high-pass filter passes high-frequency components of a signal and suppresses frequencies lower than a specified cutoff f c f_c f c ​ . It is used in applications like noise removal, speech processing, and edge detect...