Analyze audio for ACX compliance in Audacity

Demo summary
The narrator uses Audacity to check the noise floor and peak levels of a recording using the ACX Check plugin to identify which parameters fail requirements.
Step-by-step
- Select a section of silence or room tone in the recording
- Click the Loop button to repeat the selection
- Click the microphone icon and select Enable Silent Monitoring
- Observe the meter levels to identify the noise floor in dB
- Clear the loop and markers
- Select the entire waveform
- Go to the Analyze menu and select ACX Check
Watch out for
- ACX requires a noise floor no greater than -60 dB
Tips
- Make your original recording as good as possible to save time in editing
- Use a treated room to significantly lower your noise floor
- Remember that noise floor is additive, combining microphone electronics, interface noise, and computer noise with room tone
Highlights
“Let's see what passes and what doesn't.”
All demos from “15 - NEW! RMS Leveling via Auphonic for ACX Audiobooks”
1:563:40Analyze audio for ACX compliance in AudacityCurrentThe narrator uses Audacity to check the noise floor and peak levels of a recording using the ACX Check plugin to identify which parameters fail requirements.Audacity· AI Audio Enhancer & Noise Reduction
6:283:42Configure Auphonic RMS leveling presetThe user walks through the Auphonic web interface to create a preset, setting the loudness target to -20dB RMS and the peak level to -3dB for ACX standards.Auphonic· AI Mastering
10:101:59Process and download audio in AuphonicThe narrator creates a new production in Auphonic, uploads a WAV file, applies the ACX preset, and downloads the processed MP3 file.Auphonic· AI Audio Enhancer & Noise Reduction
12:091:30Verify processed audio in AudacityThe processed file is dragged back into Audacity and re-analyzed with the ACX Check tool to confirm that all parameters (Peak, RMS, and Noise Floor) now pass.Audacity· AI Mastering- Watch “15 - NEW! RMS Leveling via Auphonic for ACX Audiobooks” →
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