Table of Contents
Creating high-quality audiobooks for ACX (Audiobook Creation Exchange) requires attention to detail, especially when it comes to audio sample rates. Using the correct sample rate ensures your audiobook meets ACX standards and sounds professional to listeners.
Understanding Audio Sample Rate
The audio sample rate refers to how many samples of audio are captured per second during recording or processing. It is measured in Hertz (Hz). Common sample rates include 44,100 Hz and 48,000 Hz. The sample rate affects audio quality and file size.
ACX Recommended Sample Rate
ACX recommends that audiobooks be submitted with a sample rate of 44,100 Hz. This rate is industry standard for spoken-word audio and ensures compatibility across various platforms and devices. Using the correct sample rate helps prevent issues during submission and playback.
How to Set the Correct Sample Rate
When recording or exporting your audio, ensure the sample rate is set to 44,100 Hz. Most digital audio workstations (DAWs) allow you to select this option in the export or project settings. Double-check the sample rate before exporting your final files.
Steps for Common DAWs
- Audacity: Go to File > Export > Export Audio, then select WAV (Microsoft) signed 16-bit PCM. Click Options and set Sample Rate to 44100.
- Adobe Audition: Choose File > Export > Multitrack Mixdown > Entire Session. In the export settings, set Sample Rate to 44100 Hz.
- GarageBand: In the export dialog, select Sound Quality and choose High Quality (44.1 kHz).
Additional Tips
Ensure your recording environment is quiet to avoid unwanted noise. Use a good quality microphone and record at the correct sample rate from the start. Consistency in sample rate across all files helps maintain uniform sound quality.
Before submitting your audiobook to ACX, listen to the final files on different devices to check for quality issues. Properly formatted and high-quality audio increases the chances of approval and provides a better listening experience.
Conclusion
Using the correct sample rate of 44,100 Hz is essential for producing professional audiobooks for ACX. Proper setup during recording and exporting ensures your audio meets industry standards and provides a seamless experience for your listeners.