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The RX Audio Editor is designed to give you a range of processing options. Most of the modules in RX feature multiple processing modes, ranging from fast algorithms that sound great on most material to very time-intensive algorithms for critical applications.

Understanding the Presets, Preview and Compare controls will help you save time, especially when taking advantage of RX’s more powerful processing modes.

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Batch Processing in RX lets you automate processing on groups of files, or apply processing from multiple modules to files, and potentially save hours of work. Batch Processor receives a major upgrade to make it easier than ever to process groups of files, or apply processing from multiple modules simultaneously. Save presets, import module chains, and process several. Available for download, iZotope's RX Post Production Suite 5 combines Neutron 3 Advanced, Nectar, RX 8 Advanced, Insight 2, Dialogue Match, and other tools to help facilitate the post production process. RX 8 Advanced gives you a spectral editor for zeroing in on troublesome audio and includes a plethora of modules that can help you mitigate sonic issues anywhere in.

Presets

Each module in the RX Audio Editor features a preset menu that allows you to choose between factory presets and custom presets that you have saved. Any preset saved in a module in the RX Audio Editor can be opened in the corresponding RX plug-in, when applicable.

  • Add Preset: Creates a new preset
  • Remove Preset: Removes a preset from the drop-down list
  • Rename Preset: Changes the name of a preset
  • Set Preset Shortcut: Allows you to define a keyboard shortcut for any preset in order to recall and apply different module settings quickly
  • Import Preset: Allows you to import presets (from another machine or another user, for example)
  • Reload Preset: Rescans your preset directory for this module in order to refresh the available preset list
  • Explore Preset/Reveal Presets in Finder: Opens Windows Explorer or Finder window to the location of your presets on disk

Preset directory locations:

  • On Windows: C:Documents and SettingsusernameMy DocumentsiZotopeRX 6Presets
  • On Mac: username/Documents/iZotope/RX 6 Audio Editor/Presets/

Module Footer Controls

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Preview

Most RX modules feature a Preview button in the bottom panel of the module window. Some modules don’t support Preview because of the time-intensive nature of their processing, in many of these cases the Compare settings option is available (explained below).

Preview allows you to make adjustments to controls and hear the results without the need to process and undo processing multiple times to achieve your desired results.

Preview will apply to your active selection or if no selection is made, Preview playback will start from the current playhead position. When Loop is enabled in the Transport, Preview playback will loop.

  • PREVIEW [Shift-Space]: Plays a pre-rendered preview of the module’s current settings on the selected audio. During preview, module settings can be adjusted and adjustments will be heard within the length of the current preview buffer. For most modules, the Preview buffer size is about a half of a second long, but the Preview Buffer Length can be adjusted by accessing the Preview Options, explained below.

  • BYPASS [Shift-B] Bypasses module processing during preview.

  • Preview Options [+]: Allows adjustment of the Preview Buffer size.

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For more CPU-intensive settings, like the highest quality algorithms in Spectral De-noise and the highest quality De-click settings, RX can buffer playback to allow you to preview these slower than real-time processes.

Note about Preview buffering

When Previewing module processing, the active buffer length for preview rendering is tinted red in spectrogram/waveform display.

Pre- and Post-Roll
When previewing an effect, it is often very helpful to hear a small portion of the unprocessed audio before hearing your processed selection. This can provide a much clearer comparison and allow you to more easily discern whether or not the current processing settings are producing the desired effect.

By default, RX will play back one second of unprocessed audio before and after the current selection when previewing your processing. The Pre- and Post-roll times can be defined in the Preferences > Misc window. RX can play up to ten seconds of audio before or after the previewed selection. Pre- and Post-Roll will also occur when previewing a looped region of audio

How to disable Pre- or Post-roll

Set the Pre- and Post-roll times in the Preferences > Misc tab to 0

Tip

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Pre- and Post-roll can also be simulated manually by holding Control (Windows) or Command (Mac) to set the playhead to any desired position while preserving your audio selection. Once the playhead is set, clicking on Preview in the desired module will then start the Preview playback from the playhead position.

Compare

When you want to quickly try a lot of different settings, use the Compare feature. In some cases, you might not know what settings of a module will give you the best, most transparent results. By hitting the Compare button instead of the Process button, you can audition multiple settings of the same module and then audition the results side by side in the Compare Settings.

While one group of settings is processing in the background, you can return to the module and try a different group of settings. Learning to use the Compare Settings tool can save you from having to apply and undo a process multiple times just to find the right settings, making it a valuable time-saving feature.

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Another advantage to using the Compare Settings tool is seeing the effect your settings have in the spectrogram/waveform display and spectrum analyzer.

  • Process Comparison List: Each time settings are sent to the Compare window, a new list item is created, by default titled “Settings 1,” “Settings 2,” etc.
  • Preview: To hear (and see) the result of an item in the list, select that item and hit Preview.
  • View Settings: Updates the controls to reflect the settings selected in the Process Comparison List
  • Remove: Remove an item from the list.
  • Rename: Allows you to rename items with more descriptive names.
  • Process: Apply the selected list item to the audio file.