demobook

Analyze audio for ACX compliance in Audacity

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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

  1. Select a section of silence or room tone in the recording
  2. Click the Loop button to repeat the selection
  3. Click the microphone icon and select Enable Silent Monitoring
  4. Observe the meter levels to identify the noise floor in dB
  5. Clear the loop and markers
  6. Select the entire waveform
  7. 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. 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.AudacityAI Audio Enhancer & Noise Reduction
  2. 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.AuphonicAI Mastering
  3. 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.AuphonicAI Audio Enhancer & Noise Reduction
  4. 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.AudacityAI Mastering
  5. Watch “15 - NEW! RMS Leveling via Auphonic for ACX Audiobooks” →

AI Audio Enhancer & Noise Reduction

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  2. 1:231:10Spectral editing and frequency deletionThe user shows how to switch to Spectrogram view in Audacity to identify and delete specific low-end rumble frequencies using the Spectral Delete tool.Mike Russell
  3. 2:340:53Remove background noise with AudacityA step-by-step walkthrough of importing a Suno track into Audacity, selecting a noise profile, and applying the Noise Reduction effect with specific settings.Suno Zone
  4. 5:581:03Apply one-click audio macros in AudacityThe user shows how to use the 'Apply Macro' tool in Audacity to instantly improve raw vocal recordings using pre-configured processing chains.Master Editor
  5. 8:321:19Reduce background noise in AudacityA two-step demonstration of noise reduction: first capturing a noise profile from a silent section, then applying the effect to the entire track with specific sensitivity and smoothing settings.Master Editor
  6. 9:560:36Apply Filter Curve EQ in AudacityThe narrator demonstrates applying a 'low roll-off for speech' using the Filter Curve EQ to remove unnecessary low-frequency noise from a voice recording.Master Editor
  7. 6:152:29Reduce background noise in AudacityA two-step demonstration showing how to capture a noise profile from a silent section and then apply the Noise Reduction effect with specific sensitivity and smoothing settings.Master Editor
  8. 10:064:58Remove background noise with Noise ReductionThe narrator demonstrates the multi-step process of capturing a noise profile and applying noise reduction to eliminate background sounds like a door slam.Dewi Jenkins
  9. 15:042:19Eliminate breathing sounds with Noise GateA demonstration of using the Noise Gate effect in Audacity to automatically silence inhale sounds between spoken words.Dewi Jenkins
  10. 25:013:43Boost low volume audio workflowA step-by-step demonstration of a four-part workflow (Noise Reduction, Compressor, Amplify, and Limiter) to fix quiet recordings.Dewi Jenkins
  11. 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.Mike Teaches Audacity