Na serveru Slunečnice.cz je zajímavá iOS aplikace:

Stone Echo 1.1

Echo effect Audio Unit V3 inspired by the mayan pyramids acoustic echo. I come up with a complex phase modulated frequency of the echo so you can change it’s frequency signature. It is kind of changing the material of the reflective surface and I called it “Stone F”. I have made the echo to sound…

Adresa: https://www.slunecnice.cz/sw/stone-echo/