Audio Fingerprint Duplicate Checker

Using voiceprint fingerprint comparison, automatically find duplicate and similar audio in massive audio collections. Supports cross-format and cross-bitrate recognition, with one-click organization and deduplication.

Bug report

Loading tool, please wait...

If the online tool fails to load or run, try the desktop tool.https://tools.yikeaigc.com/

Tool Usage

Return to old version

A desktop version is available with more powerful, stable features. Open desktop version

Instructions

Software Usage Instructions

Add audio files: Enter the path to an audio file or folder in the "Input Path" box, or drag files or folders directly into the input box. Single files, multiple files, and mixed multiple-folder input are supported. Separate multiple paths with |.
Set the scan range: Check "Traverse subdirectories" to recursively scan subdirectories at all levels; after checking "Keep original path structure", exported files will be saved according to the original folder hierarchy instead of being flattened into the same directory.
Set the save directory: Used to store duplicate check reports and exported files. Path drag-and-drop is also supported.
Select a processing action:
- Archive by group: Create a separate folder for each duplicate group, place all files in the group inside it, and add the [KEEP]_ prefix to the kept item
- Extract deduplicated audio: Keep one copy from each group, add non-duplicate standalone files, and organize a clean media library
- Export by category: Copy files separately into the "Kept Audio" and "Duplicate Audio" directories
- Safe isolation: Copy extra duplicates to a review directory and generate a list, without deleting or moving the original files
- Generate report only: Only produce a CSV report without copying any audio files
Adjust parameters (optional): You can first select a "Parameter Preset" (Strict Duplicate Check, General Recommended, Loose Similarity Search, Large-Scale Initial Screening, Full Detailed Check), then fine-tune the decoding sample rate, analysis duration limit, similarity threshold, number of parallel threads, and more. The default parameters are suitable for most scenarios.
Start processing: Click "Start". The tool will first extract audio fingerprints to complete duplicate detection, then automatically organize files according to the selected action.
View results: After processing is complete, a CSV report will be generated in the save directory (including similarity, match type, duration, bitrate, sample rate, SHA1, and other information), and the corresponding organized directories will be created according to the processing action.

FAQ

A: It detects duplicates by audio content. The tool extracts the audio fingerprint of each file and compares them based on waveform and spectrum similarity, rather than relying on file names, tags, or file size. This allows it to identify audio files with different names but identical content.

A: Yes. Audio fingerprint comparison can work across different formats, sample rates, and bitrates. For example, a 128kbps MP3 and a 320kbps version, or a FLAC file from the same source, will be grouped together. It also has a certain tolerance for light editing and mild noise.

A: The threshold range is 0 to 1; the higher the value, the stricter the match. Around 0.7 or above is suitable for finding nearly identical copies; the default value is suitable for cases with the same source but different compression; around 0.4 is suitable for finding different clips of the same audio. If there are too many results, increase the threshold; if many matches are missed, lower the threshold.

A: No. All fingerprint extraction and comparison are performed locally on your device. Audio files are not uploaded to the server, protecting your privacy and data security.

A: The tool uses fingerprint caching and an efficient similarity matching mechanism to handle deduplication needs for large audio libraries. It supports mainstream audio formats such as mp3, wav, flac, aac, m4a, ogg, opus, wma, aiff, alac, and ape. Processing a large batch for the first time may take a little longer; after caching is enabled, subsequent runs will be significantly faster.

A: No, they will not be deleted automatically. The tool organizes files by exporting copies. The "safe isolation" action copies redundant duplicates to a review folder and generates a restore list, while the original files remain unchanged. You can review them manually before deciding how to handle them.

A: You can choose the retention rule, including longest duration (recommended to avoid mistakenly deleting the full version), largest file size (usually higher bitrate and more complete information), shortest path, or keeping the first one found. You can adjust it flexibly according to your organizing needs.