
Polyphase Half Band Filter for Decimation by 2 posted on September 29, 2021
Fourier Transform Linearity Property Derivation posted on January 5, 2022
Introduction to Interpolation and Upsampling posted on September 1, 2022
Oppenheim DSP Lectures YouTube Video Playlist posted on March 23, 2022
Complex Frequency Shifting in Discrete Time posted on January 1, 2023
Using Euler’s Formula to Derive Sine and Cosine posted on November 24, 2021
Power and Energy in Discrete-Time Signals posted on December 1, 2023
How to Count in Binary Numbers posted on August 1, 2024
FIR Low Pass Filter Design with Remez posted on September 22, 2021
Deriving the Ideal Low Pass Filter (LPF) posted on October 1, 2022








![A BPSK signal s[n], real Gaussian noise w[n], and the received signal x[n] = s[n] + w[n] for SNR = 20 dB](https://www.wavewalkerdsp.com/wp-content/uploads/2023/12/HowToComputeSignalToNoiseRatioSNRInSimulation_signalNoiseTimeDomain-300x240.png)
The third edition of DSP for Beginners: Simple Explanations for Complex Numbers! Includes a new chapter on sampling.