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Technical guides for getting your audiobook accepted on the first try.
ACX Audio Requirements: The Complete Technical Guide
Every technical spec ACX checks when you submit an audiobook. RMS loudness, true peak, noise floor, sample rate, bit depth, format, and silence requirements explained.
Common ACX Rejection Reasons and How to Fix Them
The most common reasons audiobooks get rejected by ACX quality control. Learn what causes each failure and how to fix it before resubmitting.
How to Make Your Audiobook ACX-Compliant
A step-by-step guide to mastering your audiobook files for ACX. Covers loudness, peak limiting, noise floor, format conversion, and silence padding.