Proprietary audio watermarking and acoustic fingerprinting for content protection, forensic tracking, authentication, and monitoring
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AFT SonicDeCloner *FREE* — Acoustic De-Duplication Tool

AFT SonicDeCloner is a freeware audio de-duplication tool that automatically detects acoustically similar audio files within a folder. Instead of comparing file contents at the byte level, the tool analyzes the sound itself. It uses our proprietary patented acoustic fingerprinting algorithm, part of AFT (Audio Fingerprinting Tools) and AudioTag.info, to match audio content regardless of file format or compression. The algorithm is designed to identify recordings originating from the same performance or source, rather than tracks that merely share the same melody.

The tool is fully stand-alone and works offline. It accepts a wide range of audio and media file formats, including mpg, mp2, mpe, mpv, ogg, mp4, m4p, m4v, mp3, mpa, aac, oga, aif, iff, m4a, wav, wma, 3g2, 3gp, asf, avi, flv, mov, swf, vob, wmv, mpeg, opus, and webm.

AFT SonicDeCloner is provided free of charge for personal, non-commercial use by AudioWatermarking.com, a technology provider specializing in acoustic fingerprinting and audio watermarking.

AFT SonicDeCloner key features:

- Acoustic-level detection: uses the AFT fingerprinting algorithm to analyze actual sound content rather than file metadata or binary data
- Format and compression agnostic: works with all major audio file formats and codecs
- Robust: works with distorted, pitch-shifted, and speed-altered audio
- Non-destructive: reports findings without deleting files
- Recursive scanning — automatically searches for audio files in subfolders
- Generates detailed reports in TXT and CSV formats
- Freeware — free for non-commercial use
- Cross-platform software: Windows, Mac OS, Linux
- Portable, does not require installation
- Works offline and is fully stand-alone
- Supports batch processing via command line
- Lightweight text-based interface

AFT SonicDeCloner screenshotAFT SonicDeCloner screenshot

Who it is for

AFT SonicDeCloner is intended for music collectors, DJs, producers, archivists, sound engineers, and anyone managing a sizable audio library. It is particularly useful when duplicate or near-duplicate files have accumulated over time across different sources, formats, and quality levels.

Typical benefits include keeping only the preferred versions of acoustically identical recordings, reducing unnecessary storage use, improving library organization, and processing large collections more efficiently.

Download

Windows: click to download (.ZIP including signed Windows EXE)

Mac OS: available upon personal request for Intel and ARM Silicon

Linux: available under commercial license

How to use

The program is a console application with a text-based user interface. Unzip the package into a dedicated folder. After extraction, the folder should contain the executable AFT_SonicDeCloner, documentation files, cygwin1.dll (Windows only), and the FFmpeg executable. Launch the program without parameters and follow the on-screen instructions. Use the keyboard to navigate to the folder you want to analyze, then press F8 to start the acoustic scan.

Analysis time depends on the number of files and available system resources. When processing is complete, the program displays the detected duplicates on screen and writes a copy of the results to a text file named AFT_SonicDeCloner_result_timestamp.txt.

Advanced users can access additional options and controls through the command line.

For faster processing and to avoid file-conversion overhead, 8 kHz mono RIFF WAV PCM files (.wav) are recommended.

Share it!

If you find this tool helpful, please share it with a link to www.AudioWatermarking.com/sonicdecloner.

Limitations

This free version can deduplicate up to 20,000 files in a single folder. If you need an unlimited version, please contact us.

Commercial version: available upon request.

Commercial inquiries

Get in touch: tools /at/ audiowatermarking.com




 

         

Updated: February 16, 2025
Latest version: 1.1

Newsfeed

> March 28, 2026
Major AWT2 upgrade with rebuilt DSP core
> March 19, 2026
Inditronics Licenses AFT Acoustic Fingerprinting Technology
> February 28, 2026
Complying with the EU AI Act: The role of Audio Watermarking Technology
> February 9, 2026
Major AWT5 upgrade with rebuilt DSP core
> November 14, 2025
Introducing Aulyzer – Scientific Audio Measurement Instrument

see more news   

 
Audio watermarking and acoustic fingerprinting
(c)2007-2026, AudioWatermarking.com, .info
Sonoworx.com

Information

Technologies
Use cases
Customers
White papers
News
About

Flagship technologies

AWT2 — watermarking
AWT5 — OTA triggering
AFT — fingerprinting
---
Freeware: SonicDeCloner
Freeware: Aulyzer

* U.S. Patents

   8,116,514
   10,089,994
   11,978,461

Contacts

E-mail: mailbox [at]
audiowatermarking.com

Web services

audiotag.info
trustedaudio.com
          
Audio watermarking and acoustic fingerprinting
(c)2007-2026, AudioWatermarking.com, .info
Sonoworx.com

Information

Technologies
Use cases
Customers
White papers
News
About

Flagship technologies

AWT2 — watermarking
AWT5 — OTA triggering
AFT — fingerprinting

* U.S. Patents

   8,116,514
   10,089,994
   11,978,461

Contacts

E-mail: mailbox [at]
audiowatermarking.com

Web services

audiotag.info
trustedaudio.com