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How to Write a Technical Paper posted on January 1, 2024
Deriving the Ideal Low Pass Filter (LPF) posted on October 1, 2022
Complex Frequency Shifting in Discrete Time posted on January 1, 2023
Using Euler’s Formula to Derive Sine and Cosine posted on November 24, 2021
Digital Signal Processing through the Lens of the FIR Filter posted on September 1, 2021
Cross Correlation: Explaining Time Lags posted on January 12, 2022
Calculate Signal to Noise Ratio (SNR) in Python Simulation posted on July 1, 2024
Designing FIR Filter Gain posted on February 23, 2022
Phase, Frequency and Negative Frequency in Complex Sinusoids posted on October 19, 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.