Re: Real-time sound cyphering algorithm

From: John Hadstate (jh113355_at_hotmail.com)
Date: 05/25/05 

Date: 25 May 2005 09:27:56 -0700

Astier Anisse wrote:
> Hello,
> My problem is quite simple:
> I'am willing to find a simple algorithm to cypher a sound:
> I need the cyphered sound to be audible, but not understandable,
> and that we can decypher it from a recorded sound (verbatim copy not needed).
>
> This seems simple, but in fact, i tried a few algorithms and i had no results.

> The objective is to have an output sound that seems to be a random sound.
> And that we can decypher after recording. "real-time" is achevied by a small
> buffer (0.5 sec for example).
>

Let me suggest the use of a device known as a "modem" to transmit your
encrypted data.

Relevant Pages

  • Re: Real-time sound cyphering algorithm
    ... >I'am willing to find a simple algorithm to cypher a sound: ... >I need the cyphered sound to be audible, but not understandable, ... >harmonics by a factor. ...
    (sci.crypt)
  • Real-time sound cyphering algorithm
    ... I'am willing to find a simple algorithm to cypher a sound: ... I need the cyphered sound to be audible, but not understandable, ... harmonics by a factor. ...
    (sci.crypt)
  • Re: Real-time sound cyphering algorithm
    ... > I'am willing to find a simple algorithm to cypher a sound: ... > I need the cyphered sound to be audible, but not understandable, ... How about something like running a stream cipher through a low-pass filter ... with a lossy algorithm (not recommended though, ...
    (sci.crypt)
  • Re: Real-time sound cyphering algorithm
    ... In article, Astier Anisse wrote: ... > I'am willing to find a simple algorithm to cypher a sound: ... > I need the cyphered sound to be audible, but not understandable, ...
    (sci.crypt)
  • [SUMMARY] Shirt Reader (#140)
    ... All of the solutions used some variant of the Metaphone algorithm to match words ... It also uses the Levenshtein distance algorithm to see how far ... The expectations.rb file just fills a global Hash with some test cases. ... It works by applying the sound algorithm to each words then building ...
    (comp.lang.ruby)