More free audio tools
Same quality bar. Still free. Still no upload.
Your files never leave your device
This is not a promise about how carefully we handle your upload. There is no upload. The file you choose is read into memory by your own browser, processed there, and handed back as a download — the tool has no server component and makes no network request with your data.
- Nothing is stored. We never receive the file, so there is no copy to retain, no retention period to disclose, and nothing to delete on request.
- Nothing is transmitted. No upload endpoint, no analytics payload carrying file contents, no third-party processor.
- You can verify it. Load this page, disconnect from the internet, and use the tool. It still works, because everything it needs is already on your machine.
- Nothing persists after you close the tab. Files are held in page memory only — not in local storage, not in a cache, not in a database.
A note on wording, because it matters: we do not describe these tools as “encrypted.” Encryption protects data that travels to somebody else's computer. Your file does not travel, so there is nothing to encrypt and nothing to intercept — which is a stronger guarantee than encryption, not a weaker one. The page itself is served over HTTPS like the rest of the site.
This makes the tools safe for material you are contractually barred from uploading to third-party services — client footage under NDA, unreleased campaign assets, anything covered by a confidentiality clause.
How it works
1. Drop a voice take
Speech, VO, or a short video (audio track only). Cap five minutes.
2. Pick strength and enhance
Local RNNoise runs frame by frame in WebAssembly (480 samples at 48 kHz). Bypass, mild, medium, or strong wet mix.
3. A/B preview and download WAV
Compare original vs enhanced, then download 16-bit PCM WAV at 48 kHz. Nothing uploads.
Questions
How is this different from Audio Denoise?
Audio Denoise is classic DSP (highpass, noise gate, mild hiss tame) with no neural model. Studio Sound runs local RNNoise WASM for stronger speech-oriented noise suppression. Use Audio Denoise for a light pass; use Studio Sound when you want the neural path.
Is this the paid Studio Sound product?
No. This free tool is on-device RNNoise in your browser. It is not the paid Studio Sound credit path and does not call a Versely denoise API.
Is this DeepFilterNet or a cloud studio plugin?
No cloud denoise API. Processing stays on your device. DeepFilterNet browser packages are heavier and CDN-oriented, so this free tool ships RNNoise only. sapphi-red AudioWorklet nodes were researched; offline file enhance uses frame-batch RNNoise (xiph/rnnoise via shiguredo) because worklets plus OfflineAudioContext are awkward in Next.js App Router.
What loads over the network?
The page assets plus the RNNoise WASM binary from this site (about 154 KB at /wasm/studio-sound/, SIMD when the browser supports it). Your audio is not uploaded to Versely. There is no Hugging Face model fetch for this tool.
Why a five minute cap?
Browser memory and main-thread WASM work grow with length. Trim longer sessions first, then enhance. A soft warning appears around three minutes.
Will Safari work?
Modern Safari with WebAssembly should run this frame-batch RNNoise path. Live AudioWorklet denoisers are flakier on Safari; that is one reason this tool does not use OfflineAudioContext plus worklets. If WASM fails, update Safari or try Chrome or Firefox.
Why WAV and not MP3?
Browsers decode many codecs but ship no MP3 or AAC encoder. WAV is uncompressed PCM we can write from the enhanced samples.
Do my files get uploaded anywhere?
No. This free tool runs entirely in your browser using the Canvas and File APIs. The file you choose is read into memory on your own machine, processed there, and offered back as a download. Nothing is sent to a server, which is also why it keeps working with your network off.
Is it actually free, or is there a catch?
Actually free, with no account and no limit, because it costs nothing to run. The work happens on your device rather than on our hardware. That is different from generating with an AI model on Versely, which does cost credits. There is no free tier for generation.
Related tools
Stay in the same job cluster. Free tools stay on-device; paid tools are labelled as such.
These rearrange files. Versely makes new ones.
Everything on this page works on a file you already have, which is why it costs nothing. Generating something that did not exist (video from a prompt, a voice, a score) runs a model, and that costs credits.