the Hallographs really do work - and very well.
I am not surprized at all and this device inspired my own experiments....
Anybody with attentive normal ears can listen to sometimes minute modification of S.Q. with changes in geometry ( form of the room) topology (Doors and windows) and acoustical properties of different materials added or substracted from his room...
Anyway who can sell many bull shit non working product costing more than one thousand bucks on a long period of times with success, fooling everybody, save political leaders or religious one who do it daily ? Almost nobody....
It is the reason the device simplicity and evident potential inspire me even if i never listened to it...
I am not a believer but imagination and common sense can sometimes walk a longer way than beliefs based on limited knowledge or limited experience....
« So on go the pendulum of thinking, from beliefs to doubts, never one without the other at a walking pace. Some walk tough on only one leg, deluded by their eternal credulous or sceptic beliefs»-Anonymus smith