voice changer

[Hitsugaya]

if i use voice changer app on android,is it possible to unfilter my voice after being filtered by an app?

thanks in advance.

[Kulverstukas]

Most likely not.

[Darkvision]

Most likely not.

(wrong) unless the app uses a cryptographically secure method. since most changers use just a simple math formula its very easy to analyse the voice data and figure out the "pattern" and remove it getting the original voice sample. For instance lets say we use the fibonacci sequence as the base to our voice changer, once its figured out that that is the "base" it becomes childs play to remove the added data and get the original voice. Obviously when i say cryptographically secure i dont mean that the voice data is being locked away but that the pattern changing algorithm will run through a crypto section to get "random" values to then add/subtract to the voice. so long as that section is  not flawed you are "safe". Safe obviously being a very subjective term....


Now if the question is regarding "i want to prank someone" yeah i doubt they have the skill even for the first part. If its "i want to call in a fake bomb threat", id say it would be very iffy...but then you should be using a burner phone or it would simply be traced right back to you anyway regardless of a changed voice. If its paranoia "i dont want people to listen into my calls" then well dont have a lot of options at this point phone wise..though i know a few of them are being discussed elsewhere. From PC to PC you do have options on secure communications. but with any of these the data itself is encrypted meaning no voice analysis can be done.

[lucid]

Sounds somewhat similar to salting hashes.

[Hitsugaya]

hmm let's take for example hacking group "anonymus" how no one managed to unfilter their voice that they have filtered in their videos.? i love how they filtered their voice ,it sounds awesome.regardless of that does someone knows how did they filtered their voice and with what method in the first place?

[RedBullAddicted]

hmm let's take for example hacking group "anonymus" how no one managed to unfilter their voice that they have filtered in their videos.? i love how they filtered their voice ,it sounds awesome.regardless of that does someone knows how did they filtered their voice and with what method in the first place?

lol.. seriously??? Just leaving this here: http://www2.research.att.com/~ttsweb/tts/demo.php

[Hitsugaya]

"Input text is logged.   It is treated as private customer data and is handled according to AT&T's Privacy Policy.   Note that AT&T will cooperate fully with law enforcement."

does that mean that they logged ip or something that can trace me back to my computer?
or i have to use this site with VPN activated?

[RedBullAddicted]

lol.. seriously (again). That was just a sample and I thought it was obvious that they used a text to speech program for their videos

[Matriplex]

So it sounds like it would actually be rather easy to just create a voice scrambling program. In order for Hitsugaya (and I) to fully understand this, have you guys ever implemented something of the sort, and if so, what kind of mathematical formula did you use?

Question:
How does noncetonic suddenly receive -6***** cookies? I smell an irritated admin

[Darkvision]

Your voice scrambling program is only as good as the formula you use to scramble it and unless you have a PhD in math with a focus on applied cryptography I would stay the hell away from making anything you'd use to call in something like a bomb threat. That being said, if you could leverage something like random.org's TRULY random number generator and break the generated large number into smaller chunks that dictate speed of speech, tone, depth, and pitch it would help to at least have a truly random source of entropy for the voice scrambling should you routinely re-query random.org for more values to modulate the voice with.


To address Matriplex's question about my negative cookies, please read my signature post . I was asking for negative cookies in order to test something within SMF (integer underflow vulnerabilities in SMF's "rep" system) and many members, administrators included, commended worthwhile posts of mine by stealing cookies instead of giving them. To re-iterate, the staff and administration of Evilzone.org did not rep bomb me into negative hell just to be assholes

Thats not what i heard, i heard that you told bluechill to suck a throbbing, ready to burst hemorrhoid(amongst other things) and that he repbombed you for it. As for what all you said above this...


Gonna have to agree with the tool noncetonic. It shouldnt as a "basic" thing be hard to do, for instance ive looked into building a board to do it with hardware before for fun. However something "professional" is probably out of the question as it would require some serious mathing. 

[Hitsugaya]

lol.. seriously (again). That was just a sample and I thought it was obvious that they used a text to speech program for their videos

i dont like ur behavior.not everyone is born with keyboard in their hands and with all knowledge in this world.i asked a simple question (for you maybe) im new in hacking world,and if u have no patience for newbies aka me,then please don't reply anymore to this thread.thank you.i don't  have nerves for inpatient people.


and btw,i c/p-ed part of their user aggreement or wahtever it was,and they stated that they wil cooperate with authorities ,and that rised a question for me that they can log ip on that site or something similiar so they can provide ip of  whoever used that site for ilegal purposes.and i asked if that's possible.i know that u'll be tempted to reply to this thread agin with another useless post,but strand urself.

[RedBullAddicted]

Uh.. sorry, was not my intention to offend you I am very sorry if I hurt your feelings.

I don't know anything about the site I posted. As said before that was just a sample of a text-to-speech application. As you may have noticed the voice in the anonymous videos does not sound like a real person. I thought when you try out a text-to-speech application you would realize that the way they read the text sounds very similar to the way it sounds in those videos. I am not an expert regarding those applications but I heard that "nuance dragon naturallyspeaking" would be one of the best. Again, I did not post the link as a usage suggestion. Just to give you a little hint.

As for your other question. Sure it is possible to log the visitors IP address when you visit a website. Thats pretty common and nearly everyone does it.

Cheers,
RBA

[pl0tuS]

i dont like ur behavior.not everyone is born with keyboard in their hands and with all knowledge in this world.i asked a simple question (for you maybe) im new in hacking world,and if u have no patience for newbies aka me,then please don't reply anymore to this thread.thank you.i don't  have nerves for inpatient people.


and btw,i c/p-ed part of their user aggreement or wahtever it was,and they stated that they wil cooperate with authorities ,and that rised a question for me that they can log ip on that site or something similiar so they can provide ip of  whoever used that site for ilegal purposes.and i asked if that's possible.i know that u'll be tempted to reply to this thread agin with another useless post,but strand urself.

That's not a nice thing to say. Specially when you're talking to a VIP with 150+ cookies. There's a reason why he hangouts in the basement. I don't see any impatient post. I also think you haven't read the rules yet.

[Hitsugaya]

to the guy who said that i didnt read rules,i did mate.
please stop posting posts irelevant to my thread.
to the vip guy,u didnt hurt my feelings it's just i dont like people who are arrogant with newbies,and u sounded like one.ur second post proved that ure not arrogant person.thanks for the site u provided,it sure does sound like voice from the anonymus video,and i believe they used that method for masking their voice,the only question i want to ask is,is there any other way to trace me back to my computer (dont calculate ip trace,that's easy to solve.)