| Mathematical Foundations | Red |
| Signals and Systems | Orange |
| Transforms and Frequency Analysis | Yellow |
| Filters and Filter Design | Lightgreen |
| Random Processes and Statistical Signal Processing | Lightblue |
| Time-Frequency Analysis and Wavelets | Plum |
| Advanced Signal Processing Techniques | Violet |
| Machine Learning and Neural Networks in Signal Processing | Silver |
| Applications in Communications and Multimedia | Tan |
| Emerging and Specialized Topics | Aquamarine |