demobook

Cleaning water bottle crinkles with iZotope RX

Demo summary

A hands-on demonstration of removing high-frequency plastic crinkles using a combination of De-click and Spectral Repair while preserving the speaker's voice.

Step-by-step

  1. Identify high-frequency transients (crinkles) in the spectrogram
  2. Apply De-click to remove the initial sharp transients
  3. Switch to Spectral Repair to address remaining 'mush' or artifacts
  4. Highlight specific frequency areas while avoiding the transients of the speaker's voice (like 'T' and 'G' sounds)
  5. Use De-plosive on low-frequency artifacts if necessary

Options

  • Copy and paste clean sections of the spectrogram over damaged ones
  • Use Ambience Match to fill in gaps after removing noise

Watch out for

  • Over-applying De-click can 'tear up' or turn the audio into mush
  • Be careful not to highlight and delete essential speech transients like the 'K' in 'crinkle' or the 'T' in 'bottle'

Tips

  • Think two-dimensionally when editing to perform surgical removals
  • Leave the beginning of a consonant (like a 'T') while removing the crinkle immediately adjacent to it
  • Spam keyboard shortcuts for tools like De-click to work faster through small sections

Highlights

See how surgical that was? I left the beginning of the T, but I got the crinkle.

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 RepairThe 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 RXCurrentA 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. 6:581:21Analyzing broadband noise and reverbThe narrator demonstrates how ambient reverb and room noise appear as 'cloudy dense fog' between vocal phrases in the RX 12 interface.Mastering․com
  2. 8:241:09Locating plosives in vocal recordingsThe demonstrator identifies low-frequency 'hot spots' in the spectrogram to pinpoint and play back distracting 'P' and 'B' plosive sounds.Mastering․com
  3. 13:211:43Removing plosives with the De-plosive moduleThe narrator uses the frequency-time selection tool to isolate a plosive and renders the De-plosive module to clean the audio.Mastering․com
  4. 15:231:27Comparing multiple processing settingsThe demonstrator shows how to use the 'Compare' history to toggle between original audio and two different De-plosive settings before rendering.Mastering․com
  5. 26:550:58Instant Process mode for rapid editingThe narrator demonstrates the 'Instant Process' feature to automatically apply De-click and Attenuate functions simply by highlighting audio areas.Mastering․com
  6. 35:582:37Real-time spectral editing in a DAW via ARAThe demonstrator uses the RX 12 Spectral Editor plugin inside Studio One to perform non-destructive plosive removal and S-attenuation directly on the timeline.Mastering․com
  7. 44:541:57Removing cymbal bleed from a snare trackA demonstration of the rebuilt De-bleed module using machine learning to isolate a snare drum from heavy cymbal bleed without a sidechain reference.Mastering․com
  8. 55:372:38Batch breath removal with Breath ControlThe narrator applies the Breath Control module to an entire vocal track, adjusting sensitivity to reduce breaths while maintaining a natural sound.Mastering․com
  9. 1:03:081:48Repairing clipped audio with De-clipThe demonstrator uses the De-clip module to reconstruct transients and remove digital distortion from an over-gained vocal recording.Mastering․com
  10. 1:07:401:24Eliminating guitar amp humThe narrator uses the 'Learn' function in the De-hum module to identify and completely remove a consistent buzzing sound from a guitar track.Mastering․com
  11. 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
  12. 2:021:55Remove drum bleed with iZotope RX 12 De-bleedThe narrator demonstrates the rebuilt De-bleed plugin on snare and tom tracks, showing how it removes cymbal and kick bleed while preserving the primary drum sound and ghost notes.Audio Toolshed