Audacity Forum

We are working in a project with subliminal audio messages and one of our tests has to do with changing the frequency of the audio files to values beyond the human perception which is 20hz-20000hz. After getting this result, we plan to play them in an audio component not in a PC. Respectfully, Jorge...

Thank you for your reply Kozikowski.
From your answer I understand that Audacity is able to achieve my goal but the problem lies on the sound card. Is this correct?
Does is mean that I need to find a sound card capable of generating the frequencies I need?

With respect,
Jorge Maldonado

I am new to sound recording and I need to change the frecuency of an audio file. I need to test changing to frecuencies greater than 20,000 hz and below 20 hz, beyond the human audible range. Is this posible with Audacity software? If so, I will very much appreciate if you tell me how. With respect,...

Hello, I am a novice in the audio field and I have been working with Adobe Audition for a while. It has a tool named "ENVELOPE FOLLOWER" which works as follows: I load 2 audio files in 2 different tracks and then I select one track to follow the volume of the other. I use this feature to m...