Professional DJ Audio Analyzer & Spectrum Suite
Detect fake MP3 320 transcodes, verify true peak headroom, inspect spectral ceilings, and export Rekordbox-ready XML playlists with zero server uploads.
All tools
Every function has its own entry. Your audio never leaves this browser.
- My LibraryAnalysed tracks stored in this browser (IndexedDB), with export and import.
- Audio AnalyzerQueue tracks, inspect their spectrum and export the batch report.
- Audio ConverterConvert a track's format and compression. Download only, never overwrites.
- Stem SeparatorSplit a track into vocals, drums, bass and instrumental.
- Rekordbox libraryLink a Rekordbox XML library, review the dry-run plan and export scripts and XML.
- Duplicate comparatorCompare duplicate copies side by side and decide which one to keep — the app changes nothing in your files.
- Analysis modulesChoose which measurements each analysis runs: spectrum, loudness, tempo, key, structure.
- Local memoryEverything this browser has stored: how many analyses, export to JSON, import and clear.
- DJ GuidesGuides on spectra, formats and preparing music for Rekordbox.
Drop your audio tracks here or click to browse
Or load files straight into the workspace. They are queued, never analysed on their own: you press Analyse when you are ready.
Drop your audio tracks here or click to browse
Lossless (WAV, FLAC, AIFF) and Lossy (MP3, AAC, M4A) · Local Processing Only
Professional DJ Audio Analyzer & Spectrum Suite
Detect fake MP3 320 transcodes, verify true peak headroom, inspect spectral ceilings, and export Rekordbox-ready XML playlists with zero server uploads.
Drop your audio tracks here or click to browse
Supports WAV, FLAC, AIFF, and MP3 files • Batch analysis up to 20,000 tracks
My Library
Your collection in one list: the folders and playlists you imported, plus the tracks this browser has analysed. Sortable, filterable, and every action runs only on what you selected.
Reading your local library…
Audio Converter
Convert a track's format and compression. Download only, never overwrites.
Nothing has been analysed yet, so there is no track to work on. Load a file here or open the analyzer.
Load a file here
Drop your audio tracks here or click to browse
Lossless (WAV, FLAC, AIFF) and Lossy (MP3, AAC, M4A) · Local Processing Only
Stem Separator
Split a track into vocals, drums, bass and instrumental.
Nothing has been analysed yet, so there is no track to work on. Load a file here or open the analyzer.
Load a file here
Drop your audio tracks here or click to browse
Lossless (WAV, FLAC, AIFF) and Lossy (MP3, AAC, M4A) · Local Processing Only
Rekordbox library
Link a Rekordbox XML library, review the dry-run plan and export scripts and XML.
Spectral FFT Analysis
Rule 0: Inference is not proof. Spectrogram analysis provides circumstantial acoustic evidence, not cryptographic certainty of master provenance.
Estimated Ceiling
FFT High Frequency Cutoff- 16 kHz:File declared as high quality or 320 kbps exhibiting a hard cutoff <= 16.5 kHz, characteristic of an upsampled 128 kbps MP3.
- 18–20 kHz:High-fidelity MP3 320 kbps or AAC with nominal encoder cutoff (18.0 - 20.5 kHz). 100% club sound system compliant.
- 22+ kHz:Lossless audio with full audible frequency response (>= 19.5 kHz).
Format
Client-Side DirectZero bytes of your audio files leave your browser. All DSP algorithms run locally inside your browser.
BS.1770-4 Loudness & Dynamics
Club Sound Rig Protection- Clipping: Digital Clipping Artifacts Detected
- Integrated Loudness: EBU R128
- Local Processing Only: Your audio never leaves this machine. Processing executes entirely inside your browser.