Higher and lower frequency spliting

[frizzyfolife]

I am in a group in psychology for a final project and we were assigned the topic of hypnosis.
I have an audio were the hypnotist is talking but there are subliminal statements.
I have went up and down the effects bar twice to no effect.
Is there any way of telling audacity through an effect or series of effects to only play audio below a certain level(not changing the audio in a sense that the loud voice gets lower) but off or less overpowering
Please if anyone can help time is not on my side here

[kozikowski]

This is the same problem as someone trying to get rid of an annoying TV set that they can hear behind their announcing presentation. We can't separate those two, either.

If anything, we can sometimes rescue the louder voice though clever gating and noise reduction, but the lower voice is pretty much gone.

If they're MP3 files, the problem is much worse. MP3 has compression damage and tends to mask differences between sounds.

Koz

[steve]

Higher and lower frequency spliting

Is there any way of telling audacity through an effect or series of effects to only play audio below a certain level

That's two different questions.
Yes you can split higher and lower frequencies - use the high-pass or low-pass filters.
No you can't extract a quiet voice from under a loud voice.