The work before the work
Sift Audio listens to every file in a messy stem delivery, works out what each one is, flags what needs a second look and prepares an organised session for your DAW — without anything leaving your computer.
116.wav comes back as bass, with the reasons shown.The problem
Stem deliveries rarely arrive tidy. Names describe a mix note, not an instrument. Versions multiply. One file is silent, another stops halfway. Before anyone can mix, someone has to open every file and work out what it is.
Sift does that first pass for you — and shows its reasoning, so you stay in charge of the decisions.
12.wavMeaningless nameawk.wavMeaningless nameno arrange.wavA mix note, not an instrumentfinal_v3 (1).wavExact copy of final_v3.wavfemale.wav + no space.wavSame take, wet and dry15.wav44.1 kHz in a 48 kHz setdelay stop.wavStarts 1.24 s lateroom tone.wavSilentbounce_tmp.wavCut short at 0:41Interactive demo
Drag in the sample delivery and take it from chaos to a DAW-ready handoff — or drop a folder of your own to see what can be measured right here in the browser. Nothing is uploaded.
Audio intelligence
awk.wavA filename can be useless. The sound rarely is. Sift weighs several kinds of evidence, then tells you which ones it used and how sure it is — so a suggestion is something you can check, not something you have to trust.
awk.wavUnknownDrums · high confidence116.wavUnknownBass · high confidenceno arrange.wavUnknownKeys · medium confidence“Repeating short transients with no stable pitch. Filename gave no useful clue.”
Illustration of how evidence is presented in the app. Values are representative.
Technical preflight
Every file measured in one place. Duplicates found before they reach the session. A short list of what deserves a closer listen — so the surprises happen here, not halfway through the mix.
Sample rate, bit depth, channels, length, peak, true peak and loudness. Example values.
final_v3 (1).wav = final_v3.wav12.wav ≈ Kick In.wavBV Stack.wav / BV Stack alt.wavYou decide what to keep. Nothing is deleted automatically.
female.wavdelay stop.wav starts 1.24 s late15.wav is 44.1 kHz in a 48 kHz setroom tone.wav has no signalA warning is a prompt to look — some offsets are intentional.
Unsupported or unreadable items are listed, not silently skipped.
DAW handoff
Sift doesn't replace your DAW. It prepares what arrives so it drops into your normal workflow: a session file where your DAW supports one, or numbered, converted stems that line up from zero and import in one pass.
Based on current test builds; compatibility will be confirmed before public release. Product names are trademarks of their respective owners. No affiliation is implied.
Privacy & portability
In the current test builds, audio analysis runs on your own computer. There's no account to create, no cloud upload for analysis, and no internet connection needed to work through a folder.
macOS 11 Big Sur or later
Apple silicon and Intel
Windows 10 and 11, 64-bit
Same five-stage workflow
Sift Audio launches on macOS first, with the Windows version following soon. Requirements reflect current test builds. Local processing reduces exposure but doesn't replace good security practice on your own computer.
Straight answers
Sift Audio is in active testing. Here's what it does today, and what's still being finalised.
It takes a messy folder of incoming audio, works out what's in it, measures every readable file, flags duplicates and possible problems, groups and orders the tracks, and prepares a clean handoff for your DAW — a session file where supported, or numbered, aligned stems.
Both. It combines an on-device sound classifier, signal measurements, filenames and metadata. That's how a file called 116.wav can still be identified as bass. Each suggestion shows its evidence and confidence.
Yes — the analysis workflow in the current test builds runs locally and doesn't need an internet connection.
No. Analysis runs on your computer and your files aren't sent to a cloud service. This website's demo also runs entirely in your browser.
Sift Audio launches on Mac first: macOS 11 Big Sur or later, on Apple silicon and Intel. A Windows version for Windows 10 and 11 (64-bit) is launching soon, with the same workflow.
Ableton Live, Pro Tools, FL Studio and others get numbered, converted stems aligned from zero, ready to import in one pass (a native Ableton Live Set is planned). Logic Pro gets an importable session via Final Cut XML. Cubase, Studio One and Bitwig Studio get a DAWproject session, and REAPER gets its own session file. Final compatibility will be confirmed before release.
You change it. Classifications are suggestions with visible reasons and confidence; low-confidence items are flagged for review, and every label can be corrected before you build.
No automatic deletion is intended. Building a session creates a new handoff folder. The separate tidy-in-place workflow shows a full preview, asks for confirmation and supports undo.
That's one of the reasons it's built local-first: files don't need to leave your machine for analysis. You remain responsible for the security of your own computer and storage.
Not yet. Sift Audio is in testing and will launch on macOS first. Pricing and release dates haven't been announced.
In active testing
Sift Audio is being tested on real-world deliveries and launches on macOS first, with Windows following soon. Until then, the demo is the best way to see how it thinks.
Explore the interactive demo