Audiobook stores expect consistent, clean audio. Here are the targets and how to fix files that fail.
Common targets
- Format: MP3 or M4A, one file per chapter.
- Consistent volume across all files (normalise so chapters do not jump in loudness).
- Clean signal — minimal background noise and no clipping (distortion from recording too loud).
- A short, even head and tail silence on each file.
Fixing files (free tools work)
Using a free editor like Audacity you can:
- Normalise levels so every chapter matches.
- Noise-reduce a quiet room hum.
- Trim long silences and re-export per chapter.
If a file is rejected
- Check it is not clipped (re-record or reduce gain).
- Confirm the format and per-chapter structure.
- Re-export and re-upload — see how to upload an audiobook and the recording guide.
Still need help? Open a ticket from your dashboard or email [email protected] — a real person replies.