Hi, leeman. Some people can hear the ultrasonics even at a normal volume. That only means you have exceptional high frequency hearing, which becomes less common as we age. Most people who can hear it find that they simply come to ignore it without a problem in a little while. Sometimes I find that a person has increased the volume on the ultrasonic subliminal significantly because they think - hey, can't hear it, maybe it's not loud enough? And then they will hear it when they usually wouldn't. But you'll be fine using it at the same volume as anything else you would listen to, or perhaps a little lower in volume if that is preferable. Most people don't notice the sounds at all. Just be careful with the volume if you listen to the ultrasonics with headphones.
Subliminal Audio Specialist & Administrator
The scientist has a question to find an answer for. The pseudo-scientist has an answer to find a question for. ~ "Failure is the path of least persistence." - Chinese Fortune Cookie ~ Logic left. Emotion right. But thinking, straight ahead. ~ Sperate supra omnia in valorem. (The value of trust is above all else.) ~ Meowsomeness!
The scientist has a question to find an answer for. The pseudo-scientist has an answer to find a question for. ~ "Failure is the path of least persistence." - Chinese Fortune Cookie ~ Logic left. Emotion right. But thinking, straight ahead. ~ Sperate supra omnia in valorem. (The value of trust is above all else.) ~ Meowsomeness!