silent subliminal message

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mohammedon
Posts: 4
Joined: Sat Oct 12, 2019 10:16 pm
Operating System: Windows 7

silent subliminal message

Post by mohammedon » Sun Oct 13, 2019 5:50 am

Hello

I have tried to do silent subliminal message similar to this one

https://quickfileshare.org/1qiI/commercial_silent_subliminal_message.wav
and when I play the commercial silent subliminal message
I cannot hear anything so I can sleep and it's work.
Only I notice the HZ by the Audio frequency counter
It show me there is a sound.



And I followed those steps
1 - Tracks
Resample
New sample rate (HZ) 192000
2- Tools
Nyquist prompt
(highpass8
(lowpass8
(mult
(lowpass8(highpass8 s 300)7000)
(hzosc45000)
(hzosc 59500))
20000)
14000)
3- Amplify
New peak Amplitude (db) - 30
4- change pitch
Frequency
31000

but it didn't work
My question is how can I make same as commercial silent subliminal message

Thanks
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steve
Site Admin
Posts: 81336
Joined: Sat Dec 01, 2007 11:43 am
Operating System: Linux *buntu

Re: silent subliminal message

Post by steve » Sun Oct 13, 2019 9:53 am

mohammedon wrote:
Sun Oct 13, 2019 5:50 am
2- Tools
Nyquist prompt
(highpass8
(lowpass8
(mult
(lowpass8(highpass8 s 300)7000)
(hzosc45000)
(hzosc 59500))
20000)
14000)
Where did that code come from? What are you attempting to do in that step?
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)

mohammedon
Posts: 4
Joined: Sat Oct 12, 2019 10:16 pm
Operating System: Windows 7

Re: silent subliminal message

Post by mohammedon » Sun Oct 13, 2019 4:19 pm

Hello steve ,

appreciated your answer, and I would like to do same this commercial silent subliminal message

https://quickfileshare.org/1qiI/commercial_silent_subliminal_message.wav

Thanks

steve
Site Admin
Posts: 81336
Joined: Sat Dec 01, 2007 11:43 am
Operating System: Linux *buntu

Re: silent subliminal message

Post by steve » Sun Oct 13, 2019 4:26 pm

mohammedon wrote:
Sun Oct 13, 2019 4:19 pm
I would like to do same this commercial silent subliminal message
Well the code that you posted will not do that. Where did that code come from?
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)

mohammedon
Posts: 4
Joined: Sat Oct 12, 2019 10:16 pm
Operating System: Windows 7

Re: silent subliminal message

Post by mohammedon » Mon Oct 14, 2019 8:44 pm

actually my friend he gave it to me when I asked him how to do silent subliminal message

and when its didn't work,I decide to ask you directly

Thanks

steve
Site Admin
Posts: 81336
Joined: Sat Dec 01, 2007 11:43 am
Operating System: Linux *buntu

Re: silent subliminal message

Post by steve » Mon Oct 14, 2019 11:22 pm

OK. To make a "silent subliminal" like the one in your first post:
  1. Start with a good clean vocal recording. The one in your sample sounded if it was created with a "text to speech" application. If you produce this recording in another application (rather than recording it yourself), ensure the file is saved as "WAV, 16-bit 44.1 kHz sample rate", then import the file into Audacity. If you record the speech in Audacity, ensure that you record at 44100 Hz sample rate (the default for Audacity).
  2. With the track selected, Apply the "Normalize" effect, and normalize to -1 dB (default setting).
  3. With the Nyquist Prompt, apply the following code:

    Code: Select all

    ;version 4
    
    (setf cf 16500) ;modulation carrier frequency
    
    (defun bandpass8 (sig lo hi)
      (lowpass8
          (highpass8 sig lo) hi))
    
    (setf *track* (bandpass8 *track* 100 3000))
    (setf *track* (mult *track* (hzosc cf)))
    (bandpass8 *track* 15000 19000)
    
    
  4. Normalize to -23 dB
Step 4 isn't strictly necessary, but is just included to give you an output level similar to your sample.
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)

mohammedon
Posts: 4
Joined: Sat Oct 12, 2019 10:16 pm
Operating System: Windows 7

Re: silent subliminal message

Post by mohammedon » Tue Oct 15, 2019 8:48 pm

Mr. Steve

Thank you very much

appreciated your help

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