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Izotope Rx: Removing cloth rustle with Spectral Repair

Izotope RxTry it →Watch full video →Thomas Boykin ·

Demo summary

The demo walks through using the Spectral Repair 'attenuate' function with low strength and feathered selections to reduce clothing noise while maintaining natural dialogue air.

Step-by-step

  1. Select the problematic audio area in the spectrogram
  2. Enable feathering (Shift + F) to soften the selection edges
  3. Open the Spectral Repair module and select the Attenuate tab
  4. Set the number of bands to 128
  5. Set the surrounding region length to 123
  6. Set the strength to a low value, such as 0.4
  7. Adjust the before and after weighting to determine where the surrounding region is sampled
  8. Process the selection to attenuate the noise

Options

  • Use the De-rustle module instead of Spectral Repair
  • Adjust feathering time and frequency manually
  • Increase strength up to 1.0 for more aggressive reduction

Watch out for

  • Do not set strength over 1.0, as it will lower the audio below the surrounding noise floor and create a hole
  • Avoid using De-rustle on large sections as it may not be effective enough compared to Spectral Repair

Tips

  • Use feathering to avoid 'Lego block' edges and create a smoother 'smear' for more natural transitions
  • Keep strength low (around 0.4) and process a second time if needed rather than using a high strength initially
  • Use Spectral Repair like a 'background replace' tool to stitch audio together based on the surrounding context
  • Monitor sibilant high frequencies and 'air' carefully to ensure dialogue remains natural

Highlights

“How you deal with jushing is crucial to maintain these sibilent high frequencies and the air.”

All demos from “iZotope RX Advanced Tutorial: Dialogue Clean Up”

  1. 15:574:27Surgical click removal with iZotope RX De-clickThe demonstrator shows how to use the De-click module as a 'sniper rifle' to surgically remove specific ticks from a lavalier mic recording without softening consonants.Izotope RxAI Audio Enhancer & Noise Reduction
  2. 20:243:41Removing cloth rustle with Spectral RepairCurrentThe demo walks through using the Spectral Repair 'attenuate' function with low strength and feathered selections to reduce clothing noise while maintaining natural dialogue air.Izotope RxAI Audio Enhancer & Noise Reduction
  3. 25:051:43Frequency-specific noise reduction with Acon Digital Extract:DialogueBoykin demonstrates using the Acon Digital plugin within the iZotope RX utility menu to perform broadband noise reduction on specific frequency selections.Izotope RxAI Audio Enhancer & Noise Reduction
  4. 28:202:21Removing applause transients with Spectral RepairThe demonstrator uses the paintbrush tool and spectral repair to manually remove handclaps from a recording by targeting the transients in the spectrogram.Izotope RxAI Audio Enhancer & Noise Reduction
  5. 34:333:23Cleaning water bottle crinkles with iZotope RXA hands-on demonstration of removing high-frequency plastic crinkles using a combination of De-click and Spectral Repair while preserving the speaker's voice.Izotope RxAI Audio Enhancer & Noise Reduction
  6. 40:052:22Parallel processing and De-bleed for noise isolationThe demo shows an advanced workflow using RX Connect to create a 'clean' and 'dirty' stack, then using the De-bleed module to isolate noise from dialogue.Izotope RxAI Audio Enhancer & Noise Reduction
  7. 45:341:43Removing generator hum with iZotope RX De-humThe demonstrator uses the De-hum module in 'Adaptive Dynamic' mode to target complex tonal harmonics from a generator recording.Izotope RxAI Audio Enhancer & Noise Reduction
  8. 52:051:54Using Cedar DNS 2 within iZotope RXBoykin demonstrates loading the Cedar DNS 2 plugin inside the RX plugin module to attenuate rain noise and broadband interference.Izotope RxAI Audio Enhancer & Noise Reduction
  9. 55:100:44Removing cicada noise with Spectral RepairThe demo shows how to use vertical interpolation in Spectral Repair to 'shotgun' cicada smears across the upper frequency bands.Izotope RxAI Audio Enhancer & Noise Reduction
  10. 1:06:140:57Dialogue boosting with Module ChainsThe demonstrator explains a 'Dialogue Boost' module chain that simultaneously attenuates noise and boosts gain to lift off-mic lines without raising the noise floor.Izotope RxAI Audio Enhancer & Noise Reduction
  11. Watch “iZotope RX Advanced Tutorial: Dialogue Clean Up” →

AI Audio Enhancer & Noise Reduction

  1. 7:131:05Remove snare bleed using the De-bleed moduleThe user demonstrates the De-bleed module on a drum track, selecting the 'snare' profile and adjusting the percentage to reduce unwanted bleed from other instruments.White Sea Studio
  2. 3:200:30Fix audio clipping with iZotope RX 11 De-clipThe creator intentionally records a distorted, clipping audio signal and demonstrates how the RX 11 De-clip tool restores the audio quality.Danny Lightning Audio and Reviews
  3. 4:101:07Remove background noise and mouth clicks in RX 11The narrator demonstrates the Repair Assistant's ability to filter out a loud window air conditioner and fan noise while isolating the voice.Danny Lightning Audio and Reviews
  4. 5:170:46De-essing vocals with iZotope RX 11The user accentuates 's' sounds in a recording to demonstrate the effectiveness of the RX 11 De-esser in real-time.Danny Lightning Audio and Reviews
  5. 6:210:53Remove room reverb with iZotope RX 11 De-reverbThe creator records in a non-treated room and adjusts the De-reverb dial to show how much room echo the tool can remove.Danny Lightning Audio and Reviews
  6. 13:532:04Remove dolly creaks with iZotope RXDialogue editor Evan Benjamin demonstrates how to identify and remove mechanical dolly creaks from a recording by copying neutral room tone and pasting it over the noise anomalies in the RX spectral editor while maintaining sync.iZotope, Inc.
  7. 16:121:20Generate clean room tone in iZotope RXThe editor shows how to create a usable loop of neutral room tone from noisy production audio by identifying small clean segments and pasting them over breaths and rustling sounds.iZotope, Inc.
  8. 17:361:37Isolate overlapping dialogue using spectral editingEvan Benjamin demonstrates removing an overlapping 'S' sound from one actor's track to allow a clean transition to a different take, using iZotope RX to surgically delete the unwanted vocal artifact.iZotope, Inc.
  9. 15:574:27Surgical click removal with iZotope RX De-clickThe demonstrator shows how to use the De-click module as a 'sniper rifle' to surgically remove specific ticks from a lavalier mic recording without softening consonants.Thomas Boykin
  10. 20:243:41Removing cloth rustle with Spectral RepairCurrentThe demo walks through using the Spectral Repair 'attenuate' function with low strength and feathered selections to reduce clothing noise while maintaining natural dialogue air.Thomas Boykin
  11. 25:051:43Frequency-specific noise reduction with Acon Digital Extract:DialogueBoykin demonstrates using the Acon Digital plugin within the iZotope RX utility menu to perform broadband noise reduction on specific frequency selections.Thomas Boykin
  12. 28:202:21Removing applause transients with Spectral RepairThe demonstrator uses the paintbrush tool and spectral repair to manually remove handclaps from a recording by targeting the transients in the spectrogram.Thomas Boykin
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