Voice inversion

[Noob_asking]

I hv some scrambled audios and there's this script from windytan using perl language GitHub - windytan/deinvert: A voice inversion descrambler (and scrambler).
I want some help in details how to install this tool and some examples to run it in audio files I tried following the steps in GitHub and original post from windytan but can't install it or run it on wav files I'm totally noob I would appreciate your help
By the way it's for split band inversion

 

[Ubbe]

There's one program that decodes live from a audio device like line in or virtual audio cable and there's another program that decodes wav files and needed the file to be in one specific sample rate, that can be altered in any wav file by a audio edit program. Both inverse programs should turn up from a google and I have them on a Win7 computer and I believe one or both where originally DOS programs but worked good in WinXP and if I remember correctly didn't had any issues using compatible mode in Win7.

It was a bit difficult to use the live program as when you changed the frequency it had to be restarted and by the time you had found the correct value the transmission was over.

To use that GitHub program, and goes for most of them on GitHub, you have to be a Linux hacker and know the in's and out's of Linux. There's so many variables that has to be correct and every ones computers are Linux distribution are setup differently.

/Ubbe

 

[Noob_asking]

There's one program that decodes live from a audio device like line in or virtual audio cable and there's another program that decodes wav files and needed the file to be in one specific sample rate, that can be altered in any wav file by a audio edit program. Both inverse programs should turn up from a google and I have them on a Win7 computer and I believe one or both where originally DOS programs but worked good in WinXP and if I remember correctly didn't had any issues using compatible mode in Win7.

It was a bit difficult to use the live program as when you changed the frequency it had to be restarted and by the time you had found the correct value the transmission was over.

To use that GitHub program, and goes for most of them on GitHub, you have to be a Linux hacker and know the in's and out's of Linux. There's so many variables that has to be correct and every ones computers are Linux distribution are setup differently.

/Ubbe

Ty for the info I appreciate it regarding that can you give me names of softwares i even tried live plugins but the audio is so so I think it's BCS I didn't filter it LP filter I used digital audio processing and other stuff by the way I don't HV a soundcard in my laptop

 

[KN4EHX]

Do yourself a favor and buy a cheap Kenwood and program it for voice inversion or get a Motorola XPR 7550 or 5550. I tried using a computer and had good success but it’s significantly easier just to program a side button for voice inversion. You should be able to find a Kenwood in whatever flavor you need for less than a Benjamin. You’ll ultimately be happier with the results.

 

[KN4EHX]

It was a bit difficult to use the live program as when you changed the frequency it had to be restarted and by the time you had found the correct value the transmission was over.

Agreed. Unless you’re super fast on the draw you’ve missed most of everything and the audio quality is still not as good as from a Kenwood or Motorola designed to do voice inversion.

 

[Ubbe]

.. the audio quality is still not as good as from a Kenwood or Motorola designed to do voice inversion.

It was the same audio quality after the inversion decoding as it was before, with either programs when I used them. It's a very simple process to decode the audio and shouldn't add any artifacts or distorsion to the end result.

/Ubbe

 

[KN4EHX]

It was the same audio quality after the inversion decoding as it was before, with either programs when I used them. It's a very simple process to decode the audio and shouldn't add any artifacts or distorsion to the end result.

/Ubbe

In my experience the audio sounded stuffy. I work in emergency management with a partner agency that uses voice inversion. As for myself, sitting with a $8000 radio that won’t do voice inversion but rather real encryption it was a little frustrating to have to pipe in audio through my laptop so I eventually just got a XPR and called it a day. Sounds better and is significantly faster.

Provided you don’t have the same issues and requirements I have, this program will probably be just fine for you.

 

[Saint]

The program I use is Voice Descrambler it's old, try a search and see if it comes up
Steve

 

[Ubbe]

In my experience the audio sounded stuffy.

You have to remember that the low bass frequencies you receive are converted and becomes the high treble frequencies in the decoded voice. If you have a filter in the receiver that cuts off anything below 250Hz to get rid of CTCSS tones in the audio, then the decoded result will be less high frequencies in the voice and will sound muffled. Also if its a weak signal with background noise, that usually consist only of high frequency components, then it will instead create a low frequency noise floor after the decode process. Everything is inverted.

/Ubbe