50Hz Band-Stop Filter Implementation Using MATLAB Built-in Functions

Using MATLAB's built-in functions, we have successfully implemented a 50Hz band-stop filter. This filter design offers exceptional flexibility, as its parameters can be easily modified to create notch filters for any desired frequency. By adjusting key parameters such as center frequency, bandwidth, and filter order, users can tailor the filter to meet specific requirements across various application scenarios. The implementation leverages MATLAB's signal processing toolbox functions, primarily iirnotch for designing second-order IIR notch filters or fir1 for FIR filter implementations. The core algorithm involves calculating the appropriate coefficients based on the specified notch frequency and quality factor (Q), then applying these coefficients using filter functions like filter or filtfilt for zero-phase filtering. Using MATLAB's built-in functions not only enables efficient filter implementation but also provides extensive customization options and flexibility. This allows for precise tuning and optimization of the filter according to specific requirements, ensuring optimal filtering performance. The implementation typically involves defining sampling frequency, calculating normalized frequency parameters, generating filter coefficients, and applying the filter to input signals. Whether in signal processing applications, power line interference removal, or other technical domains, this 50Hz band-stop filter serves as a valuable tool for eliminating specific frequency components while preserving the integrity of the remaining signal spectrum. The code structure allows straightforward modification of frequency parameters to adapt to different interference scenarios.