- Fourier Transform in R Tutorial - João Neto
- Time Series and Spectral Analysis - James Holland Jones
- Time Series Analysis Basics in R
- Digital Signal Processing Basics
- Introduction to Spectral Analysis using the emu package
- (Updated) Spectral Analysis Tutorial using emu - Jonathan Harrington / Ulrich Reubold
- Time Series with ggfortify
- Signal Processing using the signal package
- Signal Processing using soundgen
- Audio Classification with keras
- SEG Wiki - Wiki for Geophysics, including many great examples of signal processing in Matlab