User Manual
Table Of Contents
- 1: INTRODUCTION
- Intended Audience for this Guide
- About the 2014 Edition
- Additional Resources
- About iZotope
- 2: WHAT IS AUDIO REPAIR AND RESTORATION?
- 3: AUDIO REPAIR AND RESTORATION BASICS
- 4: Understanding Spectrograms / Identifying Audio Problems
- 5: WHAT IS RX 4?
- 6: DENOISING
- 7: TIPS AND TRICKS FOR EDITING DIALOGUE
- 8: BROADBAND NOISE REDUCTION
- 9: REMOVING INTERMITTENT NOISES AND GAPS
- 10: REMOVING CLICKS AND POPS
- 11: REMOVING CLIPPING
- 12: REMOVING REVERB
- 13: EXPORTING AND DELIVERING AUDIO
- Exporting and Delivering Audio in RX 4
- 14: SUMMARY
- 15: ABOUT THE AUTHORS
- APPENDIX A: GETTING SET UP TO REPAIR AND RESTORE AUDIO
- APPENDIX B: GENERAL RX 4 TOOLS
- Appendix C: REPAIRING THE INCLUDED AUDIO FILES
- Example 1: Removing Broadband Noise from a Concert Recording
- Example 2: Restoring an Historical Speech: Making Voice More Intelligible
- Example 3: Cleaning up a Phone Interview with Declick and Spectral Repair
- Example 4: Removing Clicks and Pops from a Concert on Record
- Example 5: Removing Clipping from a Phone Interview
- Example 6: Removing Guitar String Squeaks with Spectral Repair
- Appendix D: Tips from the Pros
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AUDIO REPAIR
AND ENHANCEMENT
Step 1:
For broadband noise problems, always use a Denoiser. The first step is always to create a noise profile.
This may be done manually by isolating the noise, or automatically. A good denoiser oers both manual
and automatic modes.
Automatic modes—such as Adaptive in the RX 4 Advanced Spectral Denoiser—listen to the audio and learn
the noise profile on your behalf. These modes are most suitable for speech and scenarios with a changing
noise profile, or when you want a faster workflow.
Some dedicated Dialogue Denoisers (such as RX 4 Advanced’s aptly named Dialogue Denoiser) typically
work in automatic mode, and may sound better when used on dialogue. For now, we’ll focus on manual
learning, as it’s the best solution for a wider variety of audio, including music. We’ll also be using the
Spectral Denoiser in RX 4.