
Polyphase Half Band Filter for Decimation by 2 posted on September 29, 2021
Bandwidth of a Moving Average Filter posted on August 3, 2022
Install and Run LaTeX on macOS posted on January 5, 2022
Half Band Filter Design: Exceptional Filtering Efficiency! posted on September 27, 2021
Power and Energy in Discrete-Time Signals posted on December 1, 2023
Introduction to Interpolation and Upsampling posted on September 1, 2022
Oppenheim DSP Lectures YouTube Video Playlist posted on March 23, 2022
Comb Filter Introduction and Analysis posted on March 1, 2023
Calculate Signal to Noise Ratio (SNR) in Python Simulation posted on July 1, 2024
Phase, Frequency and Negative Frequency in Complex Sinusoids posted on October 19, 2021








![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.