audio lab
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AI Voice Tools Online

Clean up a recording, isolate vocals, correct pitch, or generate new speech with AI models that download once and run entirely on your device.

Which tool do you need?

If you want to…UseWhy
Remove background hiss, hum, or fan noise from a recordingNoise RemoverLearns a noise profile automatically or from a selection you mark, then reduces it while leaving speech intact.
Pull the vocals out to make a karaoke trackVocal RemoverTwo-output AI or classic mode built specifically for instrumental and acapella results.
Split a song into vocals, drums, bass, and other for a remixStem SplitterFour sample-aligned stems with a synchronized mixer, for real production work rather than just karaoke.
Fix pitchy notes in a vocal takeVocal TunerCorrects individual notes toward a chosen key and scale while leaving timing and tone alone.
Turn humming or whistling into instrument notesVoice to InstrumentTracks a monophonic melody and renders it on a chosen instrument, with MIDI export.
Generate narration from written textText to SpeechNeural text-to-speech with 20+ English voices and adjustable speed, no recording required.
Get a transcript or subtitles from a recordingSpeech to TextOn-device transcription with timestamps and TXT, SRT, or VTT export.
Reproduce a reference voice speaking new textVoice CloningZero-shot cloning from a short reference clip, running entirely on-device.
Turn spoken words into a sung track with a backingSpeech to SongAuto-tunes your speech to a key and scale, then arranges an original backing in a chosen style.
Apply a character voice effect while recordingVoice Changer16 presets plus manual pitch, distortion, and filter controls, with live preview for non-pitch effects.

Voice & AI tools 10

Zero-shot AI voice cloning from a short reference clip, entirely on-device.

On-device AI

Pitch-correct a vocal to a key and scale, from subtle to a hard tune effect.

Pitch correction

Turn a hummed melody into notes, an instrument sound, and an exportable MIDI file.

Hum → MIDI

Reduce hiss, hum, and steady background noise from recordings on-device.

Spectral cleanup

Separate songs into vocals, drums, bass, and other stems with on-device AI.

On-device AI

Turn text into natural AI narration with 20+ voices, free and on-device.

On-device AI

Transcribe audio or video to text and export TXT, SRT, or VTT subtitles.

On-device Whisper

Tune your spoken voice to a key and arrange it over a generated backing track.

Voice + backing

Make karaoke tracks and isolated vocals with AI or Classic center-cancel mode.

Karaoke & acapella

16 voice effect presets plus manual pitch, echo, and reverb controls.

16 voice presets

Cleaning, changing, or generating a voice

Voice tools on Audio Lab split into three different jobs, and it helps to know which one you're actually doing before you pick a tool. Cleaning up an existing recording means removing something unwanted from audio that is already there — the noise remover strips hiss, hum, and steady background sound, while stem splitter and vocal remover separate voice from everything else in a mix. Changing a voice means applying an effect or correction to a performance that still came from a real take — the voice changer reshapes tone and character in real time, and the vocal tuner nudges individual notes toward a key and scale.

Generating means producing new voice content that did not exist as a recording before, or transforming one kind of input into another. Text to speech turns written text into narration, voice cloning reproduces a reference voice speaking new text, speech to song arranges spoken words into a sung track with a generated backing, and voice to instrument converts a hummed or sung melody into notes on a piano-roll. Speech to text runs the opposite direction, turning spoken audio into a written, timestamped transcript.

Vocal remover vs. stem splitter, and vocal tuner vs. voice to instrument

Vocal remover and stem splitter both use the same underlying separation model, but they answer different questions. Vocal remover is built for a two-output job — instrumental and acapella — which is exactly what a karaoke track or an isolated-vocal sample needs, and it also offers a fast classic mode with no model download for stereo files with a centered vocal. Stem splitter goes further, pulling out vocals, drums, bass, and other instruments as four separate, sample-aligned tracks with a synchronized mixer, which is what an actual remix or production project needs instead of just two stems.

Vocal tuner and voice to instrument can look similar because both track pitch in a monophonic voice, but they solve different problems. Vocal tuner corrects the pitch of an existing vocal performance, nudging notes toward a chosen key and scale while leaving the rest of the recording, including timing and tone, alone. Voice to instrument instead reads the melody out of a hum, sing, or whistle and turns it into notes played by a chosen instrument, plus an exportable MIDI file — the goal is a new instrumental part, not a corrected version of your voice.

What the on-device AI models need from you

Several tools in this group — voice cloning, stem splitter, vocal remover in AI mode, text to speech, and speech to text — run real machine-learning models locally using WebGPU where available, or WebAssembly otherwise. The first use downloads the model and caches it; sizes range from about 90 MB for text to speech to over 1 GB for voice cloning, so that first run is slower than later ones. Desktop Chrome or Edge give the steadiest performance; a phone or older laptop can be slow or run out of memory, especially on voice cloning and stem splitting.

Input quality matters more here than for simple effects. Voice cloning needs a clean 5 to 15 second reference clip and checks for it being too quiet, clipped, or the wrong length before you continue; noise remover works best on steady noise like hiss or hum, not a second voice; and pitch-tracking tools like vocal tuner and voice to instrument are built for one voice at a time, not a chord. Feeding a tool audio outside what it was built for tends to produce more artifacts.

Frequently asked questions

Does voice cloning require the speaker's permission?

Voice cloning asks you to confirm you have the right to use the reference voice before it runs. Cloning someone's voice without their consent, or using a clone to impersonate, deceive, or defraud someone, is not an acceptable use of the tool.

What's the real difference between vocal remover and stem splitter?

Vocal remover gives you two outputs — instrumental and acapella — for karaoke or vocal isolation. Stem splitter gives you four separate stems (vocals, drums, bass, other) for a full production or remix workflow.

How accurate is the speech-to-text transcription?

Accuracy depends heavily on audio quality, accents, background noise, and the model size you choose. It works well on clear speech but, like any transcription tool, can misread quiet, overlapping, or heavily accented audio, so review the editable transcript before relying on it.

Will noise remover clean up a recording with two people talking over each other?

No. Noise remover is built for steady, non-speech noise like hiss, hum, or air conditioning, not for separating overlapping voices. Stem splitter or vocal remover are closer fits for pulling one voice out of a mix, though they aren't built to isolate one of two simultaneous speakers either.

Are these voice tools free, and is my audio uploaded?

Yes, every tool here is free with no sign-up. Your audio and any text you type stay on your device; only the AI model file itself is downloaded from Hugging Face or jsDelivr the first time a tool needs it.