Audacity Forum

... squeaking noise? This code: ;version 4 (mult (hzosc 14000) *track*) modulates the amplitude of ... is expected. For the AM encoded audio to be silent, all of the following conditions must be ... think it is highly unlikely that "silent subliminals" can work. Even when you consciously ...

... squeaking noise? This code: ;version 4 (mult (hzosc 14000) *track*) modulates the amplitude of ... is expected. For the AM encoded audio to be silent, all of the following conditions must be ... think it is highly unlikely that "silent subliminals" can work. Even when you consciously ...

... after I have confirmed to myself that audio subliminals work. If I have no such proof and I ... probably chip in at this point. For me, "silent subliminals" are a curious form of steganography ... the Nyquist Prompt effect: ;version 4 (mult (hzosc 14000) *track*) After applying that ...

... probably chip in at this point. For me, "silent subliminals" are a curious form of steganography (hidden ... track via the Nyquist Prompt effect: ;version 4 (mult (hzosc 14000) *track*) After applying that code to a mono ...

... an audio signal so it can't be heard ... The magic-phrase is " silent subliminals ". I just want to do it as an exercise to teach children about hidden messages. ...

... I used to modulate the track: (mult *track* (hzosc 17500)) it would suck listening to non-effective ... offered a plausible explanation of how "silent subliminals" could possibly work, other than by placebo.

... and OK. What are you trying to do? Are you trying to create a "silent subliminal" or "decode" a "silent subliminal"? ... run this code in the Nyquist Prompt effect: ;version 4 (mult *track* (hzosc 17000))

... which we multiply with the carrier signal so that the carrier signal amplitude is modulated by the message signal. The carrier-wave is created by (hzosc <frequency> ) http://www.cs.cmu.edu/~rbd/doc/nyquist/part8.html#index384 C2) Multiply (C1) by 2. This doubles the level of the C1 signal. We do ...

... 17500) (highpass8 (lowpass8 (mult 2 (lowpass8 (highpass8 s 300) 3000) (hzosc CarrierFreq)) CarrierFreq) CarrierFreq) So this is what I've derivied. ... frequency to escape the filter and that is what is being used as the silent delivery. I thought I understood but now I'm not so sure. I think ...

I get this error when I try that Input Expression: (mult *track* (hzosc 17500.0)) Output: error: unbound variable - *TRACK* if continued: try evaluating symbol again Function: #<FSubr-PROGN: #906e778> Arguments: (MULT *TRACK* (HZOSC 17500)) Function: #<Subr-EVAL: ...