Hi,
What HSteinfeld writes above seems to be describing the basic principle of the Autophonix technology that's in Holosync CDs from AL1 and up.
Apparently Babayada is refering to some different effect, since there is no AUtofonix recording in the Mindstim Soundtrack.
I've had a similar effect with my old "homebrew" Brainwave entrainment CDs. I have a partial hearing impairment in my right ear (I'm not deaf, it's just sime frequencies that are deafened. I still can hear all frequencies, but not all as well). While listening to my soundtracks (Sine waves + brown nois), I would start hearing tiny squeaking voices in my right ear (the impaired one), but nothing in the left...
I have no explanation for that effect !
Erwan
PS : I agree, at a given moment during the Mindstim soundtrack, there's a background sound that sounds exactly like a passing truck ! It's not an auditory illusion.
