
Using Euler’s Formula to Derive Sine and Cosine posted on November 24, 2021
Designing FIR Filter Gain posted on February 23, 2022
Derivative Filter Impulse Response Derivation posted on November 24, 2021
Power and Energy in Discrete-Time Signals posted on December 1, 2023
Introduction to Interpolation and Upsampling posted on September 1, 2022
Great DSP Videos from Professor Kathleen Wage on YouTube posted on May 25, 2022
Square Root Raised Cosine Filter in Python posted on November 10, 2021
Bandwidth of a Moving Average Filter posted on August 3, 2022
Building a PSK and QAM Modulator in Python posted on June 8, 2022
Cross Correlation: Explaining Time Lags posted on January 12, 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.