
Deriving the Ideal Low Pass Filter (LPF) posted on October 1, 2022
FIR Low Pass Filter Design with Remez posted on September 22, 2021
Using Euler’s Formula to Derive Sine and Cosine posted on November 24, 2021
New GNU Radio Beginner Tutorials! posted on February 2, 2022
Introduction to Interpolation and Upsampling posted on September 1, 2022
Time Invariant and Time Varying Filters posted on September 3, 2021
The Almanack of Naval Ravikant: Buy The Book Now! posted on January 12, 2022
Windowing Function Gain Normalization posted on January 1, 2025
Wave Walker DSP at GRCon 2022! posted on October 19, 2022
Cross Correlation Explained With Real Signals posted on December 1, 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.