Restore recorded speech
Use the web app for focused restoration and denoising of compromised spoken recordings.
Independent speech-restoration company
About Diffio
Diffio is an AI audio restoration company focused on restoring and denoising compromised recorded speech.
We build custom in-house restoration models for speech and make them available through a web app and public batch API.
Focused restoration
Built for compromised spoken recordings
Diffio targets background noise, room echo or reverb, and supported distortion or clipping in recorded speech. Results depend on the source recording and should be evaluated against it.
Compare within a project
Review the source recording and completed generations together before choosing an output.
Build batch workflows
Developers can use the public API to add recorded-speech restoration to cloud batch workflows.
Transcripts, when available, provide secondary context for restoration review. They are not the primary product.
Intended audiences
Who we serve
Diffio is designed for people responsible for spoken recordings that need focused restoration before publishing, review, or reuse.
Creators and interviewers
Podcasters, interviewers, journalists, and other creators evaluating noisy, reverberant, distorted, or clipped speech.
Researchers and archivists
People reviewing compromised spoken recordings while keeping the original source available for comparison.
Developers and product teams
Teams adding batch speech-restoration workflows through Diffio's public API.
Clear product scope
Restoration that stays focused on speech
Diffio is not a DAW, a full podcast studio, or a video editor. It does not provide multitrack production, content rearrangement, music restoration, or video-picture editing.
On paid plans, Diffio can process the speech soundtrack of supported video files; the picture and other visuals remain unchanged.
Company facts
The company behind Diffio
Diffio AI is operated by Ozni Apps LLC.
Diffio AI is bootstrapped and was founded in 2024.
Its solo founder, Nathan Harmon, is based in Colorado Springs.
Explore Diffio