The 2025 update, now using the PilbertTransform.

The KkImaginationMachine Sound. This is a Sound we started working on in the Kata in 2019.

What is the KkImaginationMachine? That would be telling...

...basically it's a frequency shifter inside a delay feedback loop with a couple of filters. The Sounds own description says:

Hilbert single sideband ring modulator with feedback with optional negative/positive frequency killer.

- by the Kyma Kata group