Recording-only vs full audiobook production: what each includes, from raw booth takes to directing, editing, proofing, pickups and mastering to ACX spec.

Estimate audiobook length from word count with ACX's ~9,300 words-per-hour rule, and why finished runtime still varies.

ACX audio requirements made simple: format, RMS, peaks, noise floor, and room tone, explained by a Grammy-winning engineer who produces audiobooks.