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Single Pole IIR Filter: Substitute for Moving Average Filter posted on August 10, 2022
Half Band Filter Design: Exceptional Filtering Efficiency! posted on September 27, 2021
Polyphase Half Band Filter for Decimation by 2 posted on September 29, 2021
Building a PSK and QAM Modulator in Python posted on June 8, 2022
Using Euler’s Formula to Derive Sine and Cosine posted on November 24, 2021
Fourier Transform Linearity Property Derivation posted on January 5, 2022
Power and Energy in Discrete-Time Signals posted on December 1, 2023
The Almanack of Naval Ravikant: Buy The Book Now! posted on January 12, 2022
Derivative Filter Impulse Response Derivation posted on November 24, 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.