istran(S)

Inverse S transform

You are now following this Submission

This code is a simple inverse Stockwell transform. It's based on the idea that the time-integrated S transform is the Fourier transform of the original signal. There is some weirdness with the phase information, so I had to fix the sign on the imaginary part, but it seems to work.
This is a stand-alone function, and doesn't require any special toolboxes or libraries.

Cite As

Christian Poppeliers (2026). istran(S) (https://uk.mathworks.com/matlabcentral/fileexchange/49761-istran-s), MATLAB Central File Exchange. Retrieved .

Acknowledgements

Inspired by: Stockwell Transform (S-Transform)

General Information

MATLAB Release Compatibility

  • Compatible with any release

Platform Compatibility

  • Windows
  • macOS
  • Linux
Version Published Release Notes Action
1.2.0.0

Original version returned a decimated time domain signal, so newest version simply up-samples to the original length. Not terribly elegant, but it works.

1.1.0.0

See IEEE TRANSACTIONS ON SIGNAL PROCESSING, VOL. 55, NO. 10, OCTOBER 2007

1.0.0.0