Comment by frumiousirc

> more examples in that thread

Some supposition: A Fourier amplitude image should show that pattern as peaks at a certain angle/radius location. The exact location may be part of the identification scheme. Running peak finding on the Fourier image and then zeroing out the frequencies in the peak should remove the pattern. Modeling the shape of the peak would allow mimicking the application of a legit SynthID signature.

If anyone tries/tried this already, I'd love to see the results.