Audio Production

Pass ACX Quality Check: Expert Audio Cleanup Tips

📅 April 6, 2026 ⏱️ 2 min read
Voice actor in professional home studio recording audio for ACX submission

Introduction to ACX Quality Check

To pass the ACX quality check first time, it's essential to ensure your audio submissions meet the required standards. This includes maintaining an average loudness of -23 LUFS, peak levels below -3 dB, and keeping noise floors as low as possible. Achieving these technical requirements can be challenging, especially for voice actors who are new to audiobook narration.

Understanding ACX Audio Requirements

ACX has specific audio requirements that must be met for a successful submission. These include:

  • Average loudness: -23 LUFS ± 2 LU
  • Peak levels: below -3 dB
  • Noise floor: as low as possible

Using tools like iZotope RX 10 and FabFilter Pro can help you achieve these requirements and ensure your audio is of high quality.

Audio Cleanup Techniques

Audio cleanup is an essential step in the post-production process. It involves removing unwanted noises, breaths, and mouth sounds from your recordings. You can use software like iZotope RX 10 to remove breaths and other noises, and FabFilter Pro to equalize and compress your audio.

For voice actors who struggle with audio cleanup, the OlaVoices Audio Cleanup Service offers a convenient solution. With a 24-hour turnaround and a preview-before-pay policy, you can ensure your audio is cleaned to perfection without breaking the bank.

Frequently Asked Questions

Here are some frequently asked questions about ACX quality check and audio cleanup:

  • Q: What is the average loudness required for ACX submissions?
  • A: The average loudness required for ACX submissions is -23 LUFS ± 2 LU.
  • Q: How can I remove breaths from my recordings?
  • A: You can use software like iZotope RX 10 to remove breaths and other noises from your recordings.
  • Q: What is the noise floor requirement for ACX submissions?
  • A: The noise floor requirement for ACX submissions is as low as possible.

Conclusion

In conclusion, passing the ACX quality check requires careful attention to audio cleanup and meeting the required technical standards. By following our expert tips and guidelines, you can ensure your audiobook narrations are approved first time. Remember to use tools like iZotope RX 10 and FabFilter Pro to achieve high-quality audio, and consider using the OlaVoices Audio Cleanup Service for a hassle-free experience.

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