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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

Answers to Questions (FAQ)

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 (WAV, MP3, etc.) 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 : here (link) (Menu Analyze then Spectrum).

Example: AVS Audio Editor : here (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 : here (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 online 'Spectral Analysis' tool source code. Except explicit open source licence (indicated CC / Creative Commons / free), any 'Spectral Analysis' algorithm, applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any 'Spectral Analysis' function (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) and no data download, script, copy-paste, or API access for 'Spectral Analysis' will be for free, same for offline use on PC, tablet, iPhone or Android ! dCode is free and online.

Need Help ?

Please, check our dCode Discord community for help requests!
NB: for encrypted messages, test our automatic cipher identifier!

Questions / Comments

Thanks to your feedback and relevant comments, dCode has developed the best 'Spectral Analysis' tool, so feel free to write! Thank you!


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