Subliminal/Supraliminal help

unbuildpain · January 27, 2023, 3:32pm

Yes, that’s what “Amplitude Modulation” does. You have a “carrier wave” (in this case, a 10000 Hz (10 kHz) sine wave), and then make the amplitude of the carrier wave follow the amplitude of the “message” (the amplitude of the carrier wave is “modulated” by the amplitude of the message). You should easily be able to see that the shape of the encoded waveform is pretty much the same as the shape of the message.

Not quite the original quality, as there’s some sound quality loss due to filtering, but the quality is good enough to be able to clearly hear what is being said.

That’s unlikely. Because you can only hear the “shape” of the words, “ball” and “fall” and “row” and “cow” will all sound virtually identical when encoded.
Here’s a short sample - before decoding it, see if you can tell what is being talked about:

I couldn’t understand the modulated speech. But I was able to recover it from the script and then I could understand.

Was this single sideband or double sideband? I would like to try it with double sideband as well as frequency modulation.

If this kind of silent subliminal doesn’t work, are there any other way to make a silent subliminal effective.