Crackling Sounds and Subliminals

Hi there,

I transformed some tracks into subliminal versions, but somehow there is a crackling sound when I play the subliminals. I noticed that when I turn the volume down the crackling sound will go away. The only problem is that, I’m wondering if the subliminal is still effective when the volume is to low.

I found a post of a person describing basically the same thing.
https://forum.audacityteam.org/t/ultrasonic-subliminal-affirmations-crackling-sounds/57346/1

I selected a certain portion of the track, that contains the crackling sound and used the click removal plug-in. But I got a error with the text “Algorithm not effective on this audio. Nothing changed.”

I also tried the noise reduction plug-in with no effect.

Do you guy’s know a way to isolate these crackling sounds and removing them, while keeping the subliminal intact?