Silent Subliminal

[Shannon]

:angel:
Hi there I am Holly a Psychology PhD student researcher conducting an experiment that requires a group of people who have a negative mind set to be exposed to happy positive laughing music while the other group are exposed to nil, however neither group will be aware as I need to deliver the positive laughing music at a sound level that reaches the unconscious but not the conscious brain - the silent subliminal sounded perfect as I need to deliver it to a whole group of people therefore headphones are not an option: BUT I read Shannons post somewhere discussing the potential problems of such subliminals even causing tinnitus so this is not going to be suitable, can anyone help me?
Perhaps even tell me at what sound level the music is audible but not consciously?

Thanks

Holly

Ultrasonic subliminals may be correlated with tinnitus if they are used at volumes that are too high. This is a very high risk with headphones, which is why I have said many times that's a bad idea. But as far as I can tell, tinnitus requires extended listening times at an unreasonably high volume, which is easy to do if you don't properly calibrate the volume. I have instructions on how to find maximum volume in the general instructions. Unless you're planning weeks or months of usage at very high volumes, or the person already has tinnitus, this should not be an issue. The subconscious can perceive subliminalzed audio down to at least -80 dB at the ear.