Audacity Forum

... for high quality audio. You will need to use a lower carrier frequency, or a higher sample rate, or a different method for making the voice "silent".

please do you can write the complete process of edgar subliminal plug in , how not exeed 20000 hertz , because my record with subliminal effect reach " 21000 hz" at 44,100 frequency , at 14500 hz in subliminal effect and reach 22000 with sublimal effect at 17500 hz ... the code for nyquist is not go...

... Using the plug-in should make it easy to create "silent subliminals". Instructions for installing plug-ins are here: http://wiki.audacityteam.org/wiki/Download_Nyquist_Plug-ins#Installing_Plug-ins

... out speakers and hearing damage is particularly to do with using the "silent sound" on its own. Typically, "real world" audio has very low energy ... is mixed with normal sound (apparently a common technique with "silent subliminals"), and the normal sound has a significantly higher amplitude ...

thank you steve, then I will have to change the music player because it only plays the mp3!

chapuis60 wrote:My mp3 player is limited to 20,000 Hz, so how do you generate from an mp3 stereo audio,

MP3 format is unsuitable for this type of recording. I wrote an explanation of why that is previously in this thread.

My mp3 player is limited to 20,000 Hz, so how do you generate from an mp3 stereo audio,
a subliminal message with the highest frequency does not exceed 20000 Hz :
I get exceeds 21,000 Hz :
Thanks.

chapuis60 wrote: About plug-ins Subliminal.ny, I would be able to limit the high frequency 20,000 Hz.

Which parameters change in the plug-ins Subliminal.ny for example, to have a signal between 14500 Hz and 20000 Hz?

Sorry, I don't understand your question.

Hello Steve,

About plug-ins Subliminal.ny, I would be able to limit the high frequency 20,000 Hz.

Which parameters change in the plug-ins Subliminal.ny for example, to have a signal between 14500 Hz and 20000 Hz?

Thank you.

Hi, I found it here http://de.scribd.com/doc/124323034/Anle ... s-by-Alter

Any how, would you may have some idea how to apply this effect to many mp3 files, automatically?