FIR Low-pass Filter Design Using DSP and MATLAB

In this documentation, I designed a low-pass FIR filter using DSP and MATLAB techniques, which successfully achieved the intended filtering effects. The implementation involved selecting appropriate filter coefficients and cutoff frequencies to effectively eliminate high-frequency components from input signals, resulting in properly filtered output. The design workflow encompassed multiple technical stages: analyzing frequency response characteristics, determining filter type and order, selecting suitable window functions (such as Hamming or Blackman windows), and computing filter coefficients using MATLAB's filter design functions like fir1 or fdesign. A series of experimental validations were conducted to test the filter's performance across various input signals, including frequency domain analysis using fft functions and time-domain verification through filtering operations. Through this comprehensive process, I gained deeper insights into DSP-based filter design methodologies and acquired hands-on experience in practical MATLAB implementation for digital signal processing applications.