
Introduction to Interpolation and Upsampling posted on September 1, 2022
FIR Low Pass Filter Design with Remez posted on September 22, 2021
Why an FIR Filter Should Have an Odd Length posted on December 29, 2021
Cross Correlation Explained With Real Signals posted on December 1, 2021
Half Band Filter Design: Exceptional Filtering Efficiency! posted on September 27, 2021
Fourier Transform of the Boxcar Window posted on July 13, 2022
Easy Guide to Logarithms and Decibels posted on July 20, 2022
Bartlett (Triangular) Window Analysis With Python Code posted on July 1, 2023
How Euler’s Formula Relates Triangles, the Unit Circle and Complex Sinusoids posted on September 16, 2021
How to Count in Binary Numbers posted on August 1, 2024








![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.