ACX Plugin for Audacity: What Is It and How to Use🔎

Unlock audio perfection with the ACX plugin for Audacity. Learn the steps to optimize your audio recordings for ACX audiobook and take your audio projects to the next level.

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Dawn Tang

Updated on Apr 03, 2024

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The ACX Plugin for Audacity is a valuable tool for audio creators and narrators to meet the technical standards of ACX. Audacity is a popular open-source audio editing software. It has become even more powerful and versatile with the integration of the ACX Plugin.

The plugin simplifies the process of optimizing audio recordings to ensure they align with ACX's audiobook submission requirements. This article explores the ins and outs of the ACX Plugin for Audacity noise gate.

We'll explain how ACX works, its compatibility, and how to use it effectively to meet ACX's quality standards. The article also introduces an online tool to help you with how to remove clicking noise from audio. Whether you're an audiobook producer or narrator, this best vocal remover is essential to your audio editing toolkit.

What Is ACX Check Plugin for Audacity?

As one of the great Audacity plugins, the ACX Check plugin for Audacity is a powerful tool designed to help audiobook narrators and producers. It connects authors, publishers, and narrators to produce and distribute audiobooks. ACX has specific audio quality requirements for sample rate, bit depth, and peak levels.

The ACX Check plugin is installed for additional audio editing click removal Audacity. It allows users to easily assess and remove echo from audio in Audacity to meet the standards. ACX plugin provides a quick and convenient way to approve your recordings for ACX submission. Audacity is available for Windows and macOS.

               Pros                Cons
  • Streamlines the audiobook audio quality control process.
  • Easy to install and use.
  • Automates the audio quality control process, saving you time.
  • Limited to Audacity only.
  • Focuses only on technical aspects; does not evaluate other aspects, such as narration quality.

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How to Use ACX Plugin on Audacity

If you're preparing an audiobook for submission, ensuring your audio meets ACX's specific requirements is crucial. Audacity is a popular audio editing software that can help you achieve this with the ACX Check plugin. In addition, it has solutions to your other common problems, such as how to remove vocals from a song in Audacity.

ACX Requirements in Audacity📑

To meet ACX's technical requirements in Audacity, focus on these key specifications:

  • The file must be 192kbps with a sample rate of 44.1 kHz
  • Ensure your audio has a bit depth of 16-bit.
  • Keep peak levels below -3 dB to avoid clipping. 
  • ACX requires loudness levels between -18 dB and -23 dB LUFS.

1️⃣Install ACX Check Plugin in Audacity

Follow these steps to install the ACX Check plugin in Audacity:

Step 1. Download the ACX Check plugin from the official website.

ACX Plugin Download

Step 2. Go to "Tools" > "Nyquist Plugin" Installer and locate the ACX plugin to import and install in Audacity.

Import ACX plugin Audacity

Step 3. Open Audacity and go to "Effects," click "Add / Remove Plugins."

Add or remove plug in Audacity

Step 4. Use the "Install" button to locate and click "Enable" to install the downloaded ACX Check plugin file.

Enable ACX Check Plugin in Audacity

Step 5. Close and reopen Audacity to ensure the plugin is properly added.

You can also watch a YouTube video demonstrating the process for a detailed visual guide.

2️⃣Use the ACX Check Plugin in Audacity

After installing the ACX Check plugin, follow these steps for how to fix distorted audio in Audacity:

Step 1. Open the audio project in Audacity.

Step 2. Click on your audio track to select the entire recording.

Step 3. Go to the "Analyze" and select "ACX Check." 

Analyze audio ACX check

Step 4. The plugin will analyze your audio, checking for compliance with ACX requirements.

Step 5. If the plugin identifies any problems or non-compliance, it will provide specific details.

ACX check results

Step 6. Adjust your audio, focusing on sample rate to 44.1kHz, bit depth to 16Hz, peak levels -3dB, and loudness to -18dB.

Step 7. After making corrections, run the ACX Check plugin again.

Step 8. Save the updated file after noise reduction in Audacity.

3️⃣Meet ACX Check Requirements in Audacity

By following the ACX Check steps and following ACX's technical requirements in Audacity, you can prepare your audiobook for submission. If your video has background noise, you must learn how to remove background noise in Audacity.

To meet ACX's technical requirements in Audacity and prepare your audiobook recordings for successful submission, follow these steps:

Step 1. Go to "Tracks" > "Resample" and adjust the sample rate to 44.1 kHz.

Track resample in Audacity

Step 2. Adjust your bit depth in "Format" and select "16-bit."

Adjust bit depth Audacity

Step 3. Use Audacity's "Effect" option to open "Limiter" and adjust the peak levels under -3 dB.


Step 4. Use Audacity's built-in loudness compression effects to set loudness between -18 dB and -23 dB LUFS.

If Audacity vocal remover is not working, you can go for a better free option, as explained below.

Easily Get of Noise Online for Free

EaseUS Online Vocal Remover is a powerful online tool to simplify the process of removing unwanted noise from audio. It has features to set your audiobooks to comply with ACX requirements. With an intuitive interface, this MP3 voice remover offers the flexibility of processing unlimited audio files. You can process files with a maximum file size of 350MB and 20 minutes duration.

EaseUS Online Vocal Remover

Its ultimate remove background music from video online free features make it an excellent choice for audiobook creators and podcasters. In addition, EaseUS is expanding its capabilities, and users can extract music from YouTube or SoundCloud URLs.

  • EaseUS Online Vocal Remover has an intuitive and user-friendly interface.
  • It separates vocals from background noise quickly and easily.
  • There is no limit on the number of audio files you can process.
  • High upload capacity of up to 350MB for a single file.
  • Extract and split vocals and music from YouTube or SoundCloud URLs. 

Final Words

The ACX Plugin for Audacity is a valuable tool for audio creators in audiobook production. Audiobook Creation Exchange has technical standards to accept audiobooks. This plugin simplifies the process of evaluating and fine-tuning audio recordings. This article explored the plugin functionality, compatibility, and the steps to improve audiobook quality.

If you're looking for a more straightforward, free way to edit audio files, EaseUS Online Vocal Remover can help. This online tool enhances your audio quality and makes it professional. Don't wait much to use this free online tool; click here now to visit the website.

FAQs About ACX Check Audacity Plugin

While editing your audio recording files to meet ACX requirements, you might encounter some issues. Here are some common solutions to help you understand this tool effectively. 

1. Can you add plugins to Audacity?

Audacity allows users to add and use plugins to enhance its functionality. Audacity supports a variety of plugin formats, including VST, LV2, Nyquist, and others. You can easily install and manage plugins within Audacity to tailor them to your specific needs.

2. What program to use for ACX?

To meet ACX's technical requirements for audiobook submissions, Audacity is a widely used and effective choice. The ACX Check plugin analyzes key parameters like sample rate, bit depth, peak levels, and loudness to ensure your audio meets ACX standards.

3. How do I install VST plugins in Audacity?

 Installing VST plugins in Audacity involves simple steps:

  • Download the VST file and install it.
  • Open Audacity.
  • Go to "Effect" > "Add / Remove Plugins."
  • In the Plugin Manager window, click the New button and import the plugin file.
  • Enable the plugin and click "OK."

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