/ 01 — Tools

Free in-browser tools.
Drop a file, get an answer.

Small utilities built from the same DSP that powers Sample Vault. Nothing uploaded. Nothing stored. No account.

Fig. 01 / Key detector

Key & scale detector.

Drop any audio file. Get the key, a chromagram of tonal content, and the top matching scales ranked by confidence. Runs entirely in the browser — the file never leaves your machine.

  • —WAV, AIFF, MP3, FLAC, OGG
  • —Chromagram + top matches
  • —No upload, no sign-up
Open tool
Fig. 02 / BPM detector

BPM detector.

Drop a loop, a one-shot, or a full track. Get the BPM, detection confidence, and a read on whether the file is a loop. Onset detection plus autocorrelation, run locally in the browser.

  • —WAV, AIFF, MP3, FLAC, OGG
  • —Tempo · confidence · loop check
  • —No upload, no sign-up
Open tool
Fig. 03 / Mono compatibility

Mono-compatibility checker.

Drop a stereo file. See per-band phase incompatibility — sub-bass, bass, low-mids, mids, highs — and find out which frequencies will collapse when summed to mono on a club PA, phone speaker, or vinyl pressing.

  • —WAV, AIFF, MP3, FLAC, OGG
  • —5-band phase analysis · overall verdict
  • —No upload, no sign-up
Open tool
Fig. 04 / Camelot wheel

Camelot wheel converter.

Drop a track or click a position on the Camelot wheel. See the matching key, three harmonically-compatible neighbours, and step around the wheel for clean transitions. Same key detection, mapped to the system DJs already think in.

  • —24 keys · 12 wheel positions
  • —Energy boost · drop · mood swap
  • —No upload, no sign-up
Open tool
Fig. 05 / Pitch shifter

Pitch shifter.

Drop any audio file. Transpose by ±12 semitones with the tempo unchanged, preview both versions, and download the result as WAV. STFT phase-vocoded, runs locally in the browser.

  • —WAV, MP3, FLAC, OGG, M4A, AAC
  • —±12 semitones · tempo preserved
  • —No upload, no sign-up
Open tool
Fig. 06 / Time stretcher & BPM changer

Time stretcher & BPM changer.

Drop any audio file. Source BPM auto-detected from the filename or by analysing the audio. Set the target BPM (or pull the rate slider directly), preview, and download as WAV. Pitch unchanged.

  • —WAV, MP3, FLAC, OGG, M4A, AAC
  • —BPM auto-detect · pitch preserved
  • —No upload, no sign-up
Open tool
Fig. 07 / Duplicate sample finder

Duplicate sample finder.

Drop a folder of samples. Find exact and near-identical duplicates by perceptual hash, then quarantine the redundant copies — auto-clean in Chromium, cleanup script or coding-agent prompt everywhere else. Files never leave your machine.

  • —WAV, AIFF, MP3, FLAC, OGG, M4A, AAC
  • —Exact + near-identical clustering
  • —Quarantine, never delete
Open tool
Fig. 08 / The library audit

The library audit.

Six numbers in. The honest report on how much of your sample library you actually use, what your graveyard looks like, and what your unused samples cost. Estimates only — runs in your browser.

  • —Six inputs, ~60 seconds
  • —Awareness ratio · graveyard · cost per used sample
  • —No upload, no sign-up
Open tool