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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

Spectral analyzer of Signals


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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 (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 algorithm, applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, translator), or any function (convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (PHP, Java, C#, Python, Javascript, Matlab, etc.) no data, script or API access will be for free, same for Spectral Analysis download for offline use on PC, tablet, iPhone or Android !

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Questions / Comments

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


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