Computation of the time-frequency response over a short window of data and displaying the spectra as frequency 'slices'. Commonly applied in seismic interpretation, seismic geomorphology and quantitative seismic interpretation.
A variety of time-frequency decomposition methods can be used for the computation, for example:
- Short-time Fourier transform
- S transform or Stockwell transform
- Various wavelet transforms, like the discrete wavelet transform
- Matching pursuit and other dictionary-based transforms
- Partyka, G, J Gridley, and J Lopez (1999). Interpretational applications of spectral decomposition in reservoir characterization. The Leading Edge 18 (3), 353–360.