Разделение стемов: полный гид по AI-инструментам

Почему Stem Separation Changed the Game

Stem separation — also called source separation — takes a finished, mixed track and splits it into individual audio components: vocals, drums, bass, guitars, keys. What used to require access to the original multitrack session can now be done in seconds with a neural network and a browser tab.

For producers, the practical wins are significant. You can flip a sample cleanly without the original instrumental bleeding through. You can extract an acapella from a released record for a remix without relying on leaked stems. You can isolate a drum loop, a bass hit, or a chord stab and rebuild it. Or you can study how a finished mix sits together — muting elements to hear how the engineer carved out space. All of that is now possible without any industry connections or expensive software agreements.

The catch: not all tools are created equal. Separation quality, the number of stems you can extract, pricing, and whether processing happens on your machine or someone else's server all vary wildly. This comparison covers the three tools most relevant to bedroom and home-studio producers: LALAL.AI, Moises, and the free, open-source Ultimate Vocal Remover (UVR).

Быстрый Сравнение: LALAL.AI vs Moises vs UVR

LALAL.AI — Лучшие Multi-Stem Cloud Tool

LALAL.AI has grown into the most capable cloud stem splitter by a clear margin when it comes to the number of extractable sources. Where most tools offer four or five stems, LALAL.AI reaches ten or more: vocals, instrumental, drums, bass, acoustic guitar, electric guitar, piano, synthesizer, strings, and wind instruments.^[2] That depth makes it the tool to reach for when you need to isolate a specific melodic element — the piano line, the synth pad, the string stabs — rather than just the vocal.

The service runs on their proprietary neural network, processing everything on their servers. You get a free preview (roughly 10 seconds of output) before committing to a download, but full downloads require a paid plan. The Lite plan (around €6.75/month billed annually) gives you 90 fast-queue minutes per month plus unlimited processing in the slower relaxed queue. The Pro plan (around €13.50/month annually) adds 250 fast-queue minutes, a VST plugin, and API access.^[1]

Minutes are deducted by a formula — total file length multiplied by the number of stem types you process in one session. A five-minute track processed for three separate stem types costs 15 minutes of quota. That math matters for high-volume producers: your monthly allocation can evaporate quickly if you work through large projects.^[1]

• Use for sampling When you need a specific instrument stem (guitar riff, piano chord) from a finished record and the basic four-stem tools don't isolate it well enough.
• Use for remixing Batch-process the original and pull all ten stems in one run. The relaxed queue is unlimited even on paid plans — time is the only cost.
• Avoid when You're processing unreleased client material. Cloud processing means the file touches their servers. Read the privacy policy before uploading anything sensitive.

Moises — Musician-Friendly App

Moises is built for a slightly different user — more practicing musician than hardcore producer — but it holds up well as a quick stem-extraction tool, especially at the entry-level price point. The free tier gives you five track separations per month with basic two-stem output (vocals and instrumental). The Premium tier at $3.99/month unlocks unlimited tracks, all stem types up to five (vocals, drums, bass, other instruments, and piano), chord detection, and speed control. The Pro tier at $9.99/month adds higher-quality AI models and batch processing.^[3]

Chord detection is the feature that sets Moises apart from pure separation tools. Drop in a track and it maps the chord progression in real time alongside the separated stems — which is genuinely useful if you're sampling and want to know what key you're working in before you start chopping. The web app, desktop client, and mobile apps are all polished and fast; the onboarding is the smoothest of any tool in this category.

Separation quality sits slightly below LALAL.AI's current model on complex mixes, but for clean studio recordings — especially modern pop and hip-hop — the difference is marginal. The five-stem ceiling matters if you need guitar or synth isolation; LALAL.AI is the tool for that. For acapella extraction and quick instrumental creation, Moises is a legitimate option at a price that doesn't require justification.

Ultimate Vocal Remover (UVR) — Free, Offline Choice

Ultimate Vocal Remover is free, open-source (MIT license), and runs entirely on your own machine — no internet connection required once the models are downloaded.^[4] For producers who care about privacy, volume, or simply not paying a subscription for every split they run, it's the obvious choice.

The application bundles its own Python environment and PyTorch runtime, so you don't need to configure anything manually — download the installer, run it, and you're processing. It runs on Windows 10+, macOS Big Sur and later (separate builds for Apple Silicon and Intel), and Debian/Arch-based Linux.^[4]

What makes UVR technically competitive with paid cloud services is its model selection. It ships with three distinct AI architectures you can mix and match: VR Architecture (the original, excellent for vocal removal), MDX-Net (fast, clean, widely used), and Demucs v3/v4 including the HTDemucs hybrid transformer model — which produces four and six-stem splits with some of the cleanest instrumental separation currently available.^[4] The GPU requirement (NVIDIA GTX 1060 6GB or equivalent as a practical minimum) is real — CPU processing is possible but significantly slower on long files.

Ensemble Mode: Combining Models for Better Output

UVR's Ensemble Mode runs multiple models on the same file and merges their outputs — typically via max spectral combination — to reduce the artifacts that any single model introduces. Running HTDemucs alongside an MDX-Net vocal model in ensemble produces cleaner acapellas and instrumentals than either model alone. This is the workflow to use if you're extracting samples for commercial use and need the cleanest possible result.

1. Download the installer
   Grab the Windows, macOS (Intel or M-series), or Linux build from the UVR GitHub releases page. The bundled installer includes Python and PyTorch — no prerequisites needed.
2. Download models
   On first launch, open Download More Models and grab at least one VR Arch or MDX-Net model for vocals, and the HTDemucs v4 model for four-stem separation.
3. Select your separation type
   Choose the appropriate model for your task: VR Arch or Kim Vocal 2 for clean vocal isolation, HTDemucs FT for four-stem (vocals/drums/bass/other), MDX23C for general separation with fewer artifacts.
4. Enable Ensemble Mode for critical work
   For your most important extractions, use Ensemble Mode → MAIN STEM PAIR → Vocals/Instrumental → ENSEMBLE ALGORITHM → Max Spec to combine multiple model outputs and minimize bleed.
5. Export and import into your DAW
   Output as WAV or FLAC, then drag the stems directly into your session. No quality loss from re-encoding.

Какой Tool for Какой Job

• Sampling / flipping UVR (Ensemble Mode) or LALAL.AI. For most sample flip work the goal is a clean instrumental — use UVR for unlimited runs at zero cost, or LALAL.AI if you need a specific stem (guitar, piano) beyond the standard four.
• Acapella extraction UVR with Kim Vocal 2 or HTDemucs FT is widely regarded as the cleanest option for isolating vocals from a stereo mix. LALAL.AI's Andromeda model is competitive for cloud-based workflows.
• Remixing (full stems) LALAL.AI is the strongest option when you need 6–10 individual stems. UVR's four and six-stem Demucs models are capable but require more post-processing to separate guitar from "other."
• Karaoke / instrumentals Moises free tier (five uses/month) or UVR. Either tool handles the basic vocal-removal use case well; Moises wins on convenience and mobile access.
• Studying a mix UVR for offline, no-cost reference listening. Load stems into your DAW session and solo/mute to hear how elements were placed and processed.
• Unreleased / confidential material UVR only. Cloud tools upload files to external servers. If a client's unreleased track goes through LALAL.AI or Moises, that file has left your machine.

RipX DAW: Когда You Need Note-Level Control

RipX DAW (by Hit'n'Mix) occupies a different category from the tools above — it's a desktop application focused on spectral editing rather than quick stem extraction. After separation, it opens the results in a note-level editor where you can re-pitch individual notes, replace drum hits with your own samples, and manipulate harmonies inside the separated audio. Think of it as Melodyne crossed with a stem editor.

It's a one-time purchase (£99 for RipX DAW, £198 for RipX DAW PRO^[5]), which is appealing if you process a lot of material and dislike subscriptions. The trade-off is a steep learning curve and a proprietary file format. For most bedroom producers, UVR plus your DAW's own pitch tools covers the same ground at zero cost. RipX is worth the investment if surgical reconstruction of specific elements — rewriting the melodic line of a lead synth, replacing snare hits inside a live drum track — is core to your workflow.

A 21-day free trial is available directly from Hit'n'Mix if you want to evaluate before buying.

Bottom Line: Начать With UVR

For bedroom and home-studio producers, the default recommendation is UVR — free, offline, no subscription, competitive quality on HTDemucs. Install it once, download the models that match your workflow (HTDemucs FT for four-stem, Kim Vocal 2 for clean acapellas), and you'll rarely need anything else for standard sampling, remix prep, or reference work.

Step up to LALAL.AI when you need stem types beyond the four-stem split — electric guitar, synthesizer, strings — or when you want a faster, no-setup cloud experience for occasional work. The free preview (10 seconds of output) lets you test quality before committing to a paid plan.

Moises makes sense if your workflow already involves chord study, key detection, and playback control alongside separation, or if you need a polished mobile option. The $3.99/month Premium tier is a low barrier for unlimited tracks with full five-stem access.^[3]

One hard rule: if privacy matters — working with unreleased material, client stems, or samples you haven't cleared — keep processing local. UVR is the only tool here that guarantees your files never leave your machine.