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
140
AUDIO REPAIR
AND ENHANCEMENT
EXAMPLE 6:
REMOVING GUITAR STRING SQUEAKS WITH SPECTRAL REPAIR
Details:
This recording by guitarist Jamie Robertson contains a few loud squeaks—the result of sliding one’s hand
up and down the fretboard.
Comments:
These situations are always tricky. Should you remove all minor blemishes if your tools allow you to do so?
Or should you leave these squeaks in the final product to keep the recording’s character intact? Some-
times removing only the most oending events is the best tactic, but we’ll let you decide how far to go!
Identify the squeaks using the Spectrogram Display. Draw a box around them using the Time/Frequency
selection tool. Use Replace in Spectral Repair to select the squeaks and apply the process.
RX TIP • As these squeaks often occur right before a new chord or note is played, you may want to
set the before/after weighting control all the way to the left. This will ensure that the repair is made
solely using the sustained material from the earlier chord.
Goals:
• Use RX 4 Spectral
Repair’s Replace to
substitute squeaks for
natural guitar sustain.
Aim for a realistic result
that does not sound
unnatural.