Hi, how are you? I’m from Argentina. I just installed the “Subliminal.ny” plugin by Steve Dalton. I wanted to know what parameters I need to modify so that the plugin works but using a “low” carrier frequency, so it’s not audible. Because when I listen with the original parameters, I feel a pressure in my ear. As if my eardrum is straining, and I find it quite uncomfortable. Thanks!
Using a lower carrier frequency makes it more audible …
There are other methods…
You could simply use the Amplify effect at -50dB or so, to make it too quiet to perceive. +/-50dB is the biggest change at at time so if you can still hear it you can run it again to lower the volume more. Of course, the ability to hear it also depends on the volume control when you play it and noise in the room, etc.
Or you can use masking (drowning out) where you mix the subliminal with a louder sound (usually music or white noise or pink noise). It’s a bit easier if you open and attenuate the subliminal first (with the Amplify effect). Then Import (don’t Open) the track you want to hear in the foreground. With masking, -20 or -30dB may be quiet enough but you might have to experiment.
Or, you can go to Tracks → Add New and then Generate → Noise to put noise in the new track.
Thanks, DVDdoug. I’m a bit of a newbie 
Why can’t the Subliminal plugin be used with a very low carrier frequency instead of a very high one?
The whole idea is to “shift” the frequency up, beyond he normal hearing range (1) so you can’t hear it. As Trebor says, lowering the frequency would make it more audible. (Less subliminal?)
(1) The “traditional” audio range is from 20Hz - 20kHz. Low frequencies are bass and high frequencies are treble. Usually only young people can hear to 20kHz. Bats can hear higher!
Most music covers most of that range with many simultaneous frequencies.
Natural sounds (including voice) contain multiple-simultaneous frequencies. It’s the harmonics & overtones that make a saxophone sounds different from a piano and it’s why two different singers sound different when singing the same notes.
Spoken voice also contains a wide range of frequencies, but not the highest & lowest.
If you want to get a feel for different frequencies try Generate → Tones in Audacity. Note that most speakers can’t go down to 20Hz so you might be hearing distortion if you hear anything. And, many speakers can’t go all the way to 20kHz either.
I understand what you’re saying, but what I don’t understand is why, instead of “raising,” you can’t “lower” the frequency beyond the normal hearing range, so you can’t hear it. Wouldn’t that be the same thing?
Thanks for the explanations! Specifically, what I want to ask is why, instead of taking the carrier frequency to 16000Hz, as shown in the plugin parameter, I can’t take it to a lower range like 30 or 40Hz, so that it is not audible to me and is silent, fulfilling the subliminal function.
The minimum bandwidth for understandable speech is ~4000Hz. Cannot fit 4000 into 40.
The problem is range… You need about a 5000Hz range for speech (maybe 500-5000kHz) and you can’t squeeze all that below 20Hz. Plus, most woofers/subwoofers don’t go below the audio range.
Try one of the other methods or go online to see what you can find. We don’t “specialize” in subliminals and most of us here (including me) are total skeptics. 
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Thanks, Trevor, for your time. Now I understand better. I didn’t know about the voice range in relation to frequencies. I’m going to try the methods you mentioned. Anyway, my concerns were purely technical
Do you know of any sites or links where I can learn more about this?
Trevor and DVDdoug thanks to both!
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