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Spectral Analysis

Tool to perform spectral analysis of audio file. Spectrum analysis calculates the frequency of certain components of a signal, especially sound, these frequencies can be manipulated to hide data in an audio file.

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Spectral Analysis -

Tag(s) : Steganography

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Spectral Analysis

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See also: DTMF CodeMorse Code

Tool to perform spectral analysis of audio file. Spectrum analysis calculates the frequency of certain components of a signal, especially sound, these frequencies can be manipulated to hide data in an audio file.

Answers to Questions

How to find a text in an audio file?

Sometimes a text (some letters) or an image (rather a silhouette) is hidden in the sound spectrum.

dCode allows playback of audio files and analysis of sound frequencies to render it in different colors and positioned on a sound frequency axis.

A list of free tools to get a spectral analysis or audio spectrum:

Example: Audacity : (link) (Menu Analyze then Spectrum).

Example: AVS Audio Editor : (link) (Button Spectral in the toolbar).

The tools offer other options such as representation of the signal or sound frequencies.

How to hide a text in an audio file?

dCode suggests these tools (free):

Example: Coagula Light : (link) (Draw with the brush in the left window (black) then click Sound> Render Image, then File> Save sound As).

Source code

dCode retains ownership of the source code of the script Spectral Analysis online. Except explicit open source licence (indicated Creative Commons / free), any algorithm, applet, snippet, software (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any function (convert, solve, decrypt, encrypt, decipher, cipher, decode, code, translate) written in any informatic langauge (PHP, Java, C#, Python, Javascript, Matlab, etc.) which dCode owns rights will not be released for free. To download the online Spectral Analysis script for offline use on PC, iPhone or Android, ask for price quote on contact page !

Questions / Comments

Team dCode likes feedback and relevant comments; to get an answer give an email (not published). It is thanks to you that dCode has the best Spectral Analysis tool. Thank you.


Source : https://www.dcode.fr/spectral-analysis
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