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Reduce background noise in Audacity

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Demo summary

A 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.

Step-by-step

  1. Select a section of the audio that contains only background noise with no speaking.
  2. Go to Effect, then Noise Removal and Repair, and select Noise Reduction.
  3. Click Get Noise Profile.
  4. Select the entire track by double-clicking.
  5. Open the Noise Reduction effect again.
  6. Configure the Noise Reduction (dB), Sensitivity, and Frequency Smoothing Bands settings.
  7. Click OK to apply the effect.

Options

  • Select a noise sample from any part of the audio track.
  • Increase Noise Reduction up to 12 dB if the noise floor requires it.

Watch out for

  • The noise reduction amount should not exceed 12 dB to avoid noticeable harshness.
  • High sensitivity settings make the audio sound thinner and harsher.
  • If you need more than 12 dB of reduction to reach a -60 dB noise floor, your recording setup is likely the issue.

Tips

  • Use a setting of 6 for all three sliders (Noise Reduction, Sensitivity, and Smoothing) for standard voice recordings.
  • Calculate the required reduction by measuring the distance between your current noise floor and -60 dB.
  • Listen to the results through good headphones rather than laptop speakers to detect if the audio has become too thin.
  • Use Frequency Smoothing Bands to fill small gaps in audio data left behind by the reduction process.

All demos from “How to make your voice sound good in Audacity - Ultimate Guide”

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  2. 2:222:30Normalize audio to ACX standards in AudacityThe narrator walks through selecting the Normalize effect and adjusting the peak amplitude to -3 dB to meet professional audiobook requirements.AudacityAI Audio Editor
  3. 6:152:29Reduce background noise in AudacityCurrentA 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.AudacityAI Audio Enhancer & Noise Reduction
  4. 9:352:19Apply Filter Curve EQ for voice clarityThe user demonstrates drawing an EQ curve in Audacity, starting with a 'low roll-off for speech' preset and manually adjusting frequency dots to filter out noise below 80 Hz.AudacityAI Audio Editor
  5. 12:302:17Configure Compressor settings for balanced vocalsThe creator shows how to use the Compressor effect, selecting a lead vocal preset and manually tuning the threshold and ratio to reduce dynamic range.AudacityAI Audio Editor
  6. 15:230:37Final normalization and ACX checkThe final step shows re-normalizing the audio to -3 dB and using the ACX Check tool to verify that the peak, RMS, and noise floor levels are within professional limits.AudacityAI Mastering
  7. Watch “How to make your voice sound good in Audacity - Ultimate Guide” →

AI Audio Enhancer & Noise Reduction

  1. 0:280:46Noise reduction in AudacityThe narrator demonstrates how to remove background noise by selecting a noise profile and applying the Noise Reduction effect with specific sensitivity and smoothing settings.Mike Russell
  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 AudacityCurrentA 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 AudacityThe 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
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