Choose mono or stereo for speech
Understand channel layouts before exporting a narration recording.
Transform your audiobook recordings into clearer, more consistent productions with AI-driven enhancement. For authors, narrators, and publishers working with finished narration mixes.
Hear the result on your own recording: try a free 30-second mastering preview. No account required. MP3, WAV or FLAC up to 20 MB.
Automated speech mastering for finished narration
Adjust speech level, dynamics, and tonal balance in a finished narration mix. Results depend on source quality.
SONE processes a finished narration mix. Processing time depends on file size and the current queue.
SONE does not guarantee distributor or ACX compliance. Check the final file against current submission requirements.
Simple steps to a mastered narration file
Drag and drop your audiobook file. Accepts MP3, WAV, or FLAC files up to 1GB.
Processing time depends on the file and current queue.
Download the processed file and check it against your distributor’s delivery requirements before publishing.
Use one of your 3 free MP3 masterings this month. No card required.
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Speech mastering adjusts level, dynamics, and tonal balance in a finished narration mix. Results depend on the source recording.
SONE adjusts speech level, dynamics, and tonal balance in a finished narration mix. It cannot repair every source issue.
We accept MP3, WAV, or FLAC files up to 1GB. Output is MP3 or WAV according to your credits.
Processing time depends on file size and the current queue. You will receive a notification when the file is ready.
Files are handled to provide the mastering service. See our Privacy Policy for details about data handling.
Get in touch with our support team or start your free trial to experience SONE firsthand.
Create an account to try SONE with 3 free MP3 masterings each month. No card required.
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Understand channel layouts before exporting a narration recording.
Address room noise and check that processing preserves the voice.
Learn what automatic processing changes and why a listening check matters.
Create an account to try SONE with 3 free MP3 masterings each month. No card required.
Start for free