![Figure 3: The complex sinusoid e(j2 pi (2/4) n) only contains energy at X[2].](https://www.wavewalkerdsp.com/wp-content/uploads/wordpress-popular-posts/8136-featured-125x75.png)
New WWDSP Book For Sale!
March 1, 2025
Trending
Using Euler’s Formula to Derive Sine and Cosine - Power and Energy in Discrete-Time Signals
- DFT Frequency Resolution Explained
- ADC Saturation: Why More Gain Isn’t Always Better
- Introduction to Interpolation and Upsampling
- Derivative Filter Impulse Response Derivation
- Fourier Transform Pairs of Conjugation and Time Reversal
- The Unit Circle: The Field of Play for the Game of DSP
- Great DSP Videos from Professor Kathleen Wage on YouTube
- New WWDSP Book For Sale!
Recent Blogs
Apollo 13 and Engineering Operations
February 1, 2025
Windowing Function Gain Normalization
January 1, 2025
Should I Get a Masters Degree?
December 1, 2024
What DSP Classes Should I Take?
November 1, 2024
How To Install GNU Radio Source Code
October 1, 2024
How to Travel Well At the Airport
September 1, 2024
Celebrating Three Years of WWDSP!
August 28, 2024
How to Count in Binary Numbers
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)
Buy the Book!
The third edition of DSP for Beginners: Simple Explanations for Complex Numbers! Includes a new chapter on sampling.
