Shannon's Journal Discussion Volume 3

[Shannon]

Guys,

My understanding is ultrasonic silents are designed to be played on speakers. Can they be listened to through ear plugs whilst I watch a movie ? providing the volume is set correctly.

Thanks

Can? Yes. Should? No. In my humble opinion, too many opportunities to have issues.

Do people do it regardless? Of course. So if you're going to, make absolutely sure that it's playing, and that the volume is not set to 0 or too high. And remember that volume is not the same with earphones as it is with speakers, because of the location of the audio source relative to the eardrum. If you're playing it on your cell phone, a volume over 12/15 is potentially damaging to the ears, and I suggest a volume of 6 to 9 at the upper end is better than 10-11-12 with headphones.

In any case, I recommend against it.