How to Properly Balance Voice and Background Noise to Meet Acx Guidelines

March 16, 2026

By: Audio Scene

Creating high-quality audiobooks that meet ACX guidelines requires careful attention to the balance between voice and background noise. Properly balancing these elements ensures clarity and professionalism, making your audiobook more appealing to listeners and more likely to pass review.

Understanding ACX Noise Guidelines

ACX (Audiobook Creation Exchange) has specific standards for audio quality. They require that the voice is clear and prominent, with background noise kept to a minimum. Excessive noise or uneven volume levels can result in rejection or requests for re-recording.

Steps to Balance Voice and Background Noise

  • Record in a Quiet Environment: Use a soundproof or acoustically treated space to minimize ambient noise during recording.
  • Use Quality Equipment: Invest in a good microphone and audio interface to capture clear voice recordings.
  • Apply Noise Reduction: Use audio editing software to reduce background noise without affecting voice quality.
  • Adjust Volume Levels: Ensure your voice peaks are consistent, and background noise remains at a low, unobtrusive level.
  • Use Equalization (EQ): Balance frequencies to enhance voice clarity and diminish unwanted sounds.
  • Employ Compression: Use compression to even out volume fluctuations, making the voice more consistent.

Practical Tips for Achieving Balance

Listening critically is key. Play back your recordings and listen for any distracting background sounds or volume inconsistencies. Use headphones for detailed listening. Adjust your noise reduction and volume settings accordingly.

Consider using a pop filter to reduce plosive sounds and a noise gate to cut off background noise when you are not speaking. Regularly monitor your audio levels to ensure they stay within the recommended range specified by ACX.

Final Checks Before Submission

Before submitting your audiobook, review the final file for clarity and consistency. Confirm that background noise is minimal and that your voice is clearly audible and balanced. Use audio analysis tools to verify volume levels and noise floor.

By following these guidelines, you can produce professional-quality audiobooks that meet ACX standards, increasing your chances of approval and providing a better listening experience for your audience.