- May 16, 2017 iZotope RX6 Advanced - Audio Repair Plugin - New Features Tour. EQ Match Advanced only: Impart the EQ profile of location dialogue to ADR with two clicks. IZotope RX 5 Audio Editor.
- Without access to audio recorded by an on-set location sound engineer, Mouthon has relied on iZotope RX over the years to clean up audio yet still retain the natural sound of whatever environment Bourdain is in. In this interview, Mouthon shares how he uses RX 6 Advanced on the show.
In its time, iZotope RX3 Advanced offered the most comprehensive suite of noise-reduction software—available as a stand-alone application and as bundled plug-ins—for post-production sound, along with extensive metering, time- and pitch-shifting processors, resampling facilities and other invaluable tools. RX 4 Advanced ($1,199) adds several workflow accelerators used to comply with various loudness standards and to quickly adjust level, timbre and ambience in tracks.
Nov 14, 2017 iZotope RX 6 Advanced Audio Editor v6.0 Win & Mac Size Win 630 Mb & 454 Mb // Mac 959 Mb. RX 6 Advanced is the flagship of the RX family of products, the industry standard audio repair tool that’s been used on countless albums, movies, and TV shows to restore damaged, noisy audio to pristine condition.
I reviewed Version 4.0.1 of RX 4 Advanced (its plug-ins in AU format) using Digital Performer V. 8.06 and an 8-core Mac Pro running OS X 10.9.5. For a refresher on RX 4 Advanced’s legacy features, check out my review of RX3 Advanced in the May 2014, issue of Mix.
Streamlined Interoperability
RX’s Spectral Repair plug-in—which was a bit of a kludge in previous releases—has been discontinued, made obsolete by the new RX Connect plug-in and alternative DAW interoperability. Roughly half of leading DAWs use RX Connect as a synchronized bridge to the stand-alone RX 4 Advanced application; you first select in your DAW the audio clip you wish to process, then launch RX Connect. Other DAWs (including DP) use RX 4 as an external editor: In DP, for example, you choose the RX application as DP’s external waveform editor and then open a region in RX via DP’s Audio menu.
No matter which protocol your DAW uses, after the RX application opens you can edit the selected clip using any processing (not just Spectral Repair) it provides. Different (fast and simple) methods are used, depending on your workstation, to return the processed clip back to your DAW in perfect sync with the original clip. Because some DAWs (including Pro Tools) monopolize the system’s audio drivers, an additional plug-in dubbed RX Monitor is included to enable hearing the RX application’s output; RX Monitor interacts with your DAW like an instrument to play the RX application’s audio through the DAW’s driver.
The updated Remove Hum plug-in and module—all modules belong to the standalone application—include an Adaptive mode that analyzes your audio and automatically notches out fundamental hum-related frequencies that change over time (such as in audio for a scene that was shot in multiple locations).
The updated Time & Pitch module provides an option to run Radius processing in real time, for those tasks in which you need fast processing. The tradeoff is lower quality than with offline processing (which is still available).
New Modules
The new Leveler module uses a compressor with automatic makeup gain to curb fluctuations in signal level. Use its Target RMS slider to adjust the K-weighted RMS level of your clip. The Speed slider alters how quickly gain is adjusted. Drag the Amount slider to limit the maximum amount of gain (boost or cut) that can be applied, and raise the Noise slider to reduce potential pumping when breathing or other broadband noise occurs during gaps in dialog. You can view the gain changes that Leveler applies and edit them by dragging up and down one or more nodes at once on a graphical curve (dubbed the Clip Gain envelope; see Figure 1).
The new Loudness module automatically applies a fixed amount of gain to your entire clip (or a selected region) to instantly make it comply with a specific standard, such as BS.1770, selected from a drop-down menu. Alternatively, you can use two sliders to manually set the desired loudness (in LKFS units) and maximum true peak level of the clip. A post-limiter is automatically applied as needed to meet the selected true-peak spec.
The new EQ Match module applies static equalization to purportedly make one region’s spectral balance conform to that of another. Simply select a region (such as a phrase in a VO track) that sounds great, click Learn, select another region that sounds bad, and click Process. EQ Match lets you save spectral profiles as presets, speeding your workflow.
The Ambience Match module does for noise what EQ Match does for timbre, with one caveat: It can’t decrease the amount of ambience that already exists in a selection; it can only increase it. This is an invaluable tool for matching an ADR track’s ambience to that of the recording being replaced. You simply make a selection of the noise in the live recording, click the module’s Learn button, make a selection in your ADR track where you want the same-quality noise added, drag the Trim control to adjust the level of the ambience to be added, and click Process. Noise snapshots can be saved as custom presets.
In Post-Production Sessions
I used RX 4 Advanced extensively while working on five video projects containing many dialog tracks, music and B roll. The new Leveler module gave me excellent results easily and exceedingly fast, smoothing levels no matter the track’s spectral balance. It controlled boomy-sounding peaks beautifully, often precluding the need to de-boom using multiband compression. With moderate settings—the Amount control set no higher than 4 dB—I got more natural-sounding results than when using my go-to compressors and limiters. After rendering the processing, I could mouse-drag one or more nodes at once in the automatically generated clip-gain envelope to alter Leveler’s gain changes in select spots (see Fig. 1).
The Loudness module conformed my mix to any of seven different loudness standards with just a couple of mouse clicks—a real timesaver. Using the Ambience Match module, I could capture the room tone on a dialog track and add it to another track that sounded too dead; a trim control let me adjust the level of the ambience ±6 dB without affecting the level of the dialog. Listening to the generated ambience in isolation, it was apparent it was synthesized. But in the mix, it worked inconspicuously if applied sparingly to tracks in select, short gaps.
I tried a couple dozen times to use EQ Match to smooth spectral balances on dialog tracks, but I always found I got better (and more predictable) results using a combination of static and dynamic equalization plug-ins.
Any editing performed on tracks in the RX application is destructive once sent back to DP (overwriting the original file everywhere it occurs in DP), a disadvantage compared to working with RX 4 Advanced’s nondestructive plug-ins. Overwritten files initially played back as—and looked like, in DP’s Sequence Editor—full-scale, broadband noise in DP; rebooting DP would always permanently restore pristine playback, but I’d sometimes also need to bounce the file to a new track to restore proper waveform display. This appears to be a bug in DP, not in the RX application.
On startup, the RX application would often arbitrarily reroute consistent output assignments to different MOTU I/O boxes or banks—sometimes to those disabled in the MOTU PCI Audio Setup utility. And I often heard distracting crackling noises and clicks while working with the application, especially while previewing a module’s processing. (An associate of mine confirmed hearing the same artifacts using RX 4 with a different system.) Thankfully, the artifacts did not print when files were overwritten back to DP; nor did they ever occur when using the RX plug-ins.
Purchase in Advance?
iZotope also offers a less-expensive “standard” version, which doesn’t include the Dereverb, Deconstruct, Leveler, Loudness, EQ Match, Ambience Match, Radius RT (Time & Pitch) and Insight (metering suite) modules and plug-ins. It also lacks the center-channel extraction and azimuth alignment features for the Channel Operations module and some extra controls for Denoiser, Spectral Repair and Declick. Many of these additional features included with the Advanced version have proven to be indispensible in my work; they are well worth the extra cost.
If you work in post-production sound, restoration or audio forensics and don’t already own RX3 Advanced, buying RX 4 Advanced is an absolute must—if only for its incredible legacy plug-ins. If you can tolerate the RX application’s intermittent routing and monitoring problems, the Leveler and Loudness modules make an upgrade from RX3 Advanced worthwhile.
Mix contributing editor Michael Cooper is a recording, mix, mastering and post-production engineer.
TRY THIS
DP can send only one region at a time to an external editor such as RX 4 Advanced. If you want to send an entire track containing non-contiguous soundbites, first make a time-range selection in DP for the entire track and select Merge Soundbites (option-shift-M).
iZotope RX 6 Advanced Audio Editor v6.0 Win & Mac
Size Win 630 Mb & 454 Mb // Mac 959 Mb
RX 6 Advanced is the flagship of the RX family of products, the industry standard audio repair tool that’s been used on countless albums, movies, and TV shows to restore damaged, noisy audio to pristine condition. From noise reduction to removing clicks to fixing distortion, RX is a complete toolkit for cleanup and audio restoration needs. Visually identify and repair problems with the standalone RX Audio Editor application, or use the plug-ins in real time in your favorite DAW or NLE.
Built for dialogue editors and post production professionals, RX 6 Advanced features powerful, time saving dialogue editing tools and industry firsts like De-rustle and Dialogue Isolate, developed from machine learning.
Features
Machine learning the impossible
Years of research and innovations in machine learning allowed us to solve some of the most impossible repair issues in audio post production, including lavalier mic rustle and noisy dialogue backgrounds. Only RX 6 Advanced now includes both of these jaw-dropping new features.
De-rustle
Developed with machine learning, De-rustle enables you to remove lavalier mic rustle from dialogue with a single click—an industry first!
Dialogue Isolate
Developed with machine learning, Dialogue Isolate extracts dialogue from noisy environments with complex background sounds like clanging plates in a restaurant, traffic noise, and machinery.
De-wind
Clean up intermittent low-frequency wind rumble and bursts from location dialogue.
Composite View
Edit multiple files at once to fix problems picked up by multiple microphones or in multi-channel files.
Mouth De-click
Remove distracting mouth noise with the new low-latency Mouth De-click.
De-ess
Spectral De-ess
Tame overly aggressive sibilance. The new Spectral De-ess mode transparently attenuates sibilance with iZotope’s Spectral Shaping technology.
De-bleed
Fix bleed problems in multi-mic’d situations, click track bleed, and other bleed issues.
Ambience Match
Fill in consistent ambience beds under constructed sentences and ADR lines right from within Pro Tools AudioSuite.
EQ Match
Impart the EQ profile of location dialogue to ADR with two clicks.
spectral-repair
Visually paint away audio problems like ringing cell phones, birds, and scene interrupting sirens.
Voice De-noise
Fine-tuned for vocals and dialogue, Voice De-noise reduces unwanted steady-state or changing background noise like air conditioning, refrigerator hum, and amp hiss.
Izotope Rx 6 Audio Editor Eq Match 2
Audio Editor Online
Breath Control
Reduce or remove distracting breaths between words and phrases.
De-plosive
Transparently repair unwanted plosives with a single click.
De-hum
Remove ground loop hum and line noise.
Spectral De-noise
Attenuate amp buzz, tape hiss, and other unwanted steady-state background noise.
De-click
Clean up vinyl clicks, clocking errors, and more with the new low-latency De-click algorithm.
Izotope Rx 7 Audio Editor Advanced
De-clip
Repair digital and analog clipping artifacts to restore distorted audio.