Table of Contents
When submitting your audiobook to ACX (Audiobook Creation Exchange), ensuring high audio quality is essential. One common issue that can affect the professionalism of your recording is background noise. This article provides tips to meet ACX requirements and achieve a clear, polished sound.
Understanding ACX Background Noise Requirements
ACX has specific standards for audio quality to guarantee a consistent listening experience. Background noise must be minimal; ideally, it should be inaudible or barely perceptible. Excessive noise can lead to rejection of your submission, delaying publication.
ACX Noise Level Standards
ACX recommends that background noise should be less than -60 dB. This means that any ambient sounds, hums, or hisses should be at a very low level, not distracting the listener from the narration. Using a noise floor measurement tool can help you assess your recordings accurately.
Tips for Reducing Background Noise
- Choose a Quiet Recording Environment: Record in a space with minimal ambient noise, such as a closet or a room with soft furnishings.
- Use Quality Equipment: Invest in a good microphone and audio interface to capture clear sound and reduce unwanted noise.
- Employ Acoustic Treatments: Use foam panels, blankets, or curtains to absorb sound reflections and external noise.
- Record at the Right Time: Choose times when external noise (traffic, appliances) is at its lowest.
- Utilize Noise Reduction Software: Post-process recordings with tools like Audacity or Adobe Audition to remove background noise.
Best Practices for a Professional Sound
Achieving a professional sound involves more than just reducing background noise. Consistent audio levels, clear diction, and proper editing are crucial. Always listen to your recordings on different devices to ensure quality and clarity.
Final Checks Before Submission
- Ensure background noise is below -60 dB throughout the recording.
- Remove any distracting sounds or breaths that are too loud.
- Normalize audio levels for consistency.
- Export in the recommended format: WAV or MP3 with a bit rate of at least 192 kbps.
By following these tips, you can meet ACX standards and produce an audiobook with a clear, professional sound that enhances the listener’s experience and ensures a smooth approval process.