
Phase, Frequency and Negative Frequency in Complex Sinusoids posted on October 19, 2021
Cross Correlation Explained With Real Signals posted on December 1, 2021
Polyphase Half Band Filter for Decimation by 2 posted on September 29, 2021
Digital Signal Processing through the Lens of the FIR Filter posted on September 1, 2021
How to Create Additive White Gaussian Noise (AWGN) posted on June 1, 2022
FIR Low Pass Filter Design with Remez posted on September 22, 2021
Comb Filter Introduction and Analysis posted on March 1, 2023
One Year Anniversary! posted on August 24, 2022
Designing FIR Filter Gain posted on February 23, 2022
The Design of Everyday Things: Book Review posted on November 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.