iZotope RX 9 Advanced Audio Editor: Complete Review & Key Features

Best iZotope RX 9 Tips for Podcasters and Producers

1. Start with Repair Assistant

• Use Repair Assistant with the “Dialogue” preset to let RX auto-detect issues, then review suggested module settings before applying.

2. Clean signal chain order

• Typical sequence: De-clip → De-click/De-plosive → Voice De-noise → De-reverb → EQ → Spectral Repair/Music Rebalance. Apply heavier fixes earlier (clipping, clicks) and spectral surgery last.

3. Use Voice De-noise for consistent background noise

• Enable Learn on a noise-only region when possible. Set adaptive mode for changing noise and reduce only enough to preserve natural tonality (aim for 6–12 dB reduction then fine-tune).

4. Dialog Isolate for messy environments

• Use Dialog Isolate to pull voice out of crowd/room noise. Reduce artifacts by keeping the strength moderate and combining with manual spectral editing where needed.

5. Remove plosives and mouth noises surgically

• Use De-plosive for low-frequency blasts, Mouth De-click and Spectral Repair to paint out isolated clicks and lip smacks without affecting breaths.

6. Tame room sound with De-reverb carefully

• Apply De-reverb in small amounts across multiple passes rather than one heavy pass to avoid unnatural “warbling.” Combine with EQ to restore presence.

7. Use Spectral Editor for targeted fixes

• Visually select problem artifacts (creaks, coughs, chair squeaks) and use Spectral Repair (Attenuate/Replace). Zoom in and preview at different repair strengths.

8. Music Rebalance for intros/overlaps

• Use Music Rebalance to reduce music under speech or extract stems for separate processing.