Audio Editing and Post-Production Flashcards
6 cards from real Audiobook Production practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Audio Editing and Post-Production flashcards as text
What does 'normalization' do to an audiobook audio file?
Answer: Adjusts the overall level so the highest peak reaches a target value
Normalization raises or lowers the entire file's gain so that the loudest peak hits a specified target level, commonly -3 dBFS for ACX delivery.
What is a 'compressor' used for in audiobook post-production?
Answer: To reduce the dynamic range by lowering loud peaks
A compressor automatically reduces the gain of audio that exceeds a set threshold, evening out the loud and quiet passages for a more consistent listening experience.
What is the ACX maximum noise floor requirement for audiobook audio files?
Answer: -60 dB RMS
ACX requires the noise floor—the background noise present in silence—to be at or below -60 dB RMS to ensure a quiet, professional-sounding recording.
What is the purpose of a 'limiter' as the final stage in an audiobook mastering chain?
Answer: To prevent peaks from exceeding a set ceiling and causing clipping
A limiter acts as a hard ceiling, preventing any audio transient from exceeding a maximum level such as -3 dBFS, ensuring clean delivery without digital clipping.
What does the term 'punch and roll' refer to in audiobook recording?
Answer: Re-recording from just before a mistake by punching in mid-sentence
Punch and roll allows the narrator to play back the recording, then seamlessly 'punch in' to re-record from a point just before an error, maintaining flow.
Which export file format does ACX require for audiobook submission?
Answer: MP3
ACX requires audiobook files to be submitted as MP3s at 192 kbps or higher, encoded as constant bit rate (CBR) mono files.