ACX Audiobook Editing and Mastering Service | Noise Reduction, Breath Removal & Loudness Leveling | per 60 mins

Ready to publish your audiobook but struggling with audio quality, loudness levels, background noise, or ACX technical requirements? Our professional audiobook editing and mastering service helps prepare your raw narration recordings for submission by cleaning up unwanted sounds, balancing audio levels, and formatting your files to meet the specified ACX audio standards.

Whether you're an independent author, audiobook narrator, voice artist, or publisher, this service helps turn raw recordings into organized, polished audiobook files. We handle the technical audio preparation so you can focus on your book and your audience.

Important: This listing covers audiobook chapters or raw recording files up to 60 minutes in total length per order. If you have a full-length audiobook or a multi-chapter project, please contact us for a custom quote based on your total runtime or word count.

What's Included in This Audiobook Mastering Service?

Professional Audiobook Editing

Unwanted distractions can interrupt the listening experience and affect the overall quality of your narration. Your recordings are processed to improve clarity, consistency, and presentation.

• Precision Audio Editing: Remove unwanted mouth clicks, pops, excessive breaths, and distracting recording artifacts while maintaining a natural narration style.

• Background Noise Reduction: Reduce unwanted room noise, hiss, and hum while preserving vocal clarity.

• Loudness Leveling: Adjust audio levels to the ACX RMS range of -23 dB to -18 dB.

• Peak Level Control: Process audio to meet the ACX peak-level limit of no higher than -3 dB.

• Noise Floor Management: Reduce background noise to meet the specified maximum noise floor of -60 dB RMS.

• Audio Equalization and Compression: Refine tonal balance and dynamics for a more consistent listening experience.

• Chapter Organization: Split and organize your recordings into appropriately named files for audiobook submission.

Each recording is handled with the goal of delivering clear, consistent narration without unnecessary processing that could make your voice sound unnatural.

ACX Audiobook Technical Requirements

Your finished files are prepared against the following technical specifications:

• File format: MP3

• Bitrate: 192 kbps Constant Bit Rate (CBR)

• Sample rate: 44.1 kHz

• Channel format: Mono

• RMS loudness: Between -23 dB and -18 dB

• Peak level: No higher than -3 dB

• Noise floor: No higher than -60 dB RMS

These specifications reflect the technical targets provided for this service. Final acceptance also depends on other applicable ACX requirements, including file organization and recording content.

Who Can Benefit From This Service?

This audiobook editing and mastering service is suitable for:

• Independent Authors: Prepare narrated books for digital audiobook distribution.

• Audiobook Narrators: Improve the technical quality and consistency of recorded narration.

• Voice Artists: Clean up longer-form spoken-word recordings.

• Self-Publishing Creators: Get help preparing audiobook files for a professional publishing workflow.

• Authors With Technical Rejections: Address supported audio issues involving RMS levels, peaks, background noise, and file formatting.

If your recordings have been flagged for technical audio problems, this service can help address the relevant mastering and editing issues.

How It Works

Step 1: Purchase Your Service

Place an order for an audiobook recording or chapter project up to 60 minutes in total length.

Step 2: Upload Your Recordings

Upload your raw audio files to Google Drive or MEGA and send the shareable link through the appropriate order communication channel. Ensure the link permissions allow access to the files.

Step 3: Audio Editing and Mastering

Your supplied recordings will be edited, cleaned, leveled, and mastered according to the specified technical requirements.

Step 4: Receive Your Finished Files

Receive an organized folder of processed audiobook files prepared for upload, subject to the scope of your order.

Delivery Policy

Delivery Time: Your completed AI audio service files will be delivered by email within 24 hours after purchase.

Please note that this listing is for audiobook audio editing and mastering, not audiobook narration or text-to-speech generation.

Important Ordering Information

• This listing covers recordings up to 60 minutes in total length per order.

• Full-length audiobooks and larger multi-chapter projects require a custom quote.

• Please provide accessible links to your raw recordings.

• Ensure that you have the necessary rights and permissions to provide the audio files for editing.

• The service focuses on audio cleanup, editing, mastering, and technical formatting. Acceptance by a publishing platform cannot be guaranteed under every circumstance.

Get Your Audiobook Ready for Submission

Don't let technical audio issues slow down your publishing plans. Get professional audiobook editing and mastering to help prepare your narration for a smoother submission process.

Place your order today and take the next step toward sharing your audiobook with listeners.