Radio frequency interference is the presence of unwanted signals in the radio frequency spectrum used by WiFi networks (most commonly 2.4 GHz and 5 GHz). These unwanted signals are typically transmitted by other electronic devices that use the same radio waves as WiFi networks. Provides options to authorize or de-authorize RX (explained in the Authorization chapter), launch the iZotope Updater and choose how often the Updater automatically checks for updates. RX 6 Audio Editor supports the use of the following plug-in formats in the “Plug-in” module: VST 2: Windows and Mac; AU (AudioUnit): Mac Only.
Understanding the Preferences menu
Audio
Driver Type
Allows you to select a sound card driver model to use for playback and recording.
Note: Some hardware devices monopolize the audio drivers when sending audio clips to RX via RX Connect. If you are not able to hear the audio sent to RX from your DAW via RX Connect, change the audio driver to RX Monitor in the Driver type menu. See RX Monitor.
The rest of the dialog contains settings for your audio device and also includes a test tone generator.
Input/Output Device
Choose the device/sound card you want RX to use for playback and recording.
Buffer Size
The total playback buffer size. In general, lowering these buffer sizes will improve meter responsiveness and lower latency, but increase CPU needs. Raising buffer sizes will lower CPU cost but increase latency. It's worth exploring these ranges to find values that work best on your system.
Num Buffers
Number of playback sub-buffers. (MME Only.)
Channel Routing
For ASIO and CoreAudio drivers, click this button to choose which input and output channels RX uses. Click the Channel Routing button to open the Channel Routing dialog box.
Configure Driver
Launches the manufacturer’s driver configuration dialog.
Release when not in use
Auto-closes the audio device when playback in RX stops, freeing it for use in other audio applications. Disable this if playback from RX isn’t responsive enough.
Test Tone
The test tone generator is useful for testing your speakers, audio hardware and listening environment. Tones at set frequencies or at a custom frequency can be used as test tones, as can white or pink noise. In addition, a Channel Identification mode will identify left and right speakers.
Enable
Starts playback of a test tone.
Type
Sets the type of test tone to play.
Volume
Sets the volume of the test tone.
Frequency
Sets the frequency of the test tone.
Output Gain
Output gain allows you to nondestructively adjust the playback level of RX 5 Audio Editor.
Display
Show tooltips
When enabled, hovering over an RX feature with the mouse cursor will show a short description of the feature.
Display cursor coordinates in status bar
When this is enabled, the time coordinate of the cursor is shown in the status bar at the bottom of the RX main window. The amplitude of the audio at the cursor position and the frequency at the cursor position is also shown.
Show analog waveform
When digital audio is played back, it is converted to analog. The peak values in the analog waveform can be larger than the peaks in the digital waveform, leading to clipping in the output of a digital-to-analog converter. When Show analog waveform is enabled, RX will compute an analog waveform in the background. Any peaks will be highlighted in red on top of the existing digital waveform.
At very extreme zoom levels, RX always displays an analog waveform.
Offload waveform calculations
When this is enabled, RX's waveform display will be computed in the background. This allows very large files to be loaded very quickly, but it slows down RX's waveform displays.
Waveform interpolation order
If you zoom into the waveform so that individual samples become visible, RX will display an upsampled analog waveform as well as the individual digital samples. The interpolation order controls the quality of upsampling. Higher values yield more accurate analog waveforms at the expense of CPU usage.
Brightness
Adjusts the general brightness of the RX interface, allowing you to make RX more readable on your specific display.
Floating window opacity
Changes the opacity for RX's floating windows. This can be useful if you wish to leave floating windows on top of the spectrogram and waveform without completely obscuring the display.
Keyboard Shortcuts
While RX includes default keyboard shortcuts, you can also customize them to your liking.
Presets
Save groups of key assignments with this tool.
Show commands containing
Lets you search by keyword for a command you want to assign to a keystroke.
Shortcuts for selected command
Shows if there are any keystrokes assigned to the command selected in the above menu.
Remove
Removes the currently assigned keystroke from a command.
Press Shortcut Key
To assign a new keystroke to a command, select the command from the menu, then click in this field and press a key or combination of keys.
Assign
Assigns the entered keystroke to the current command. The shortcut will only be assigned to the current command if you press this button.
Shortcut key currently used by
Lists commands that the current keystroke is assigned to.
Note: On Windows systems, by default, 'Alt + a letter' will open the corresponding menu for your currently open application. Alt + V for example will open RX's View menu drop down. By default, none of RX's shortcuts should conflict with these keyboard shortcuts, however if you wish to assign Alt + V to another operation, it will take precedence over the View menu.
Miscellaneous
Session data folder
Allows you to choose a different folder to save RX's temporary session data. These files are created to allow actions to be undone and sessions to be recalled in RX. Because these can be very large, it is best to set this to the drive on your computer with the most free space.
Time scale frame rate
This sets the frame rate used to draw the time scale when RX is set to display the time code (see View menu or right-click the time ruler to change this setting). Choose from a list of standard frame rates or click in the combo box to define a custom frame rate.
Default full-bandwidth paste mode
This controls RX's behavior when pasting a full-bandwidth audio selection. Insert will move aside existing audio, Replace will overwrite existing audio, and Mix will add to existing audio.
Default limited-bandwidth paste mode
Similar to the full-bandwidth paste mode, this controls RX's behavior when pasting a limited-bandwidth audio selected.
Resume last editing session when app starts
On RX's start-up, the last audio file will be reloaded along with full history list of any edits made.
Automatically open files ending with .L and .R as split stereo
Mono audio files with (.L and .R) as well as (.1 and .2) extensions will be opened as stereo files when this option is enabled.
Recall selections during undo/redo
When this is enabled, RX will recall the selection used for an item in the undo history. When browsing the undo history, the selected region will be restored along with the audio.
Sometimes it is useful to turn this off if you need to compare undo history items and not break your current selection (like a useful loop).
Play only selected channels
If only a single channel of audio is selected and this option is enabled, all other channels will be muted during playback.
Calculate RMS using AES-17
Uses the AES-17 1998 standard for RMS calculations (0 dB is a full scale sine wave) in the level meter, Waveform Statistics and Leveler modules. The other option is when 0 dB is the RMS of a full-scale square wave. These options differ by 3 dB.
Pre- and Post-Roll during preview (ms)
Izotope Rx Rf Interference Therapy
When Previewing audio processing in any module, the specified time amount will be added to the beginning and end of the previewed selection in order to provide contrast between unprocessed and preview-processed audio.
Izotope Rx 7 Elements
Selection Feathering (ms)
This control allows for crossfading of processed and unprocessed audio when processing. If you need to make more precise edits, set this to 0.
Authorization & Updates
This tab enables you to authorize and deauthorize the software, as explained Authorization.
Plug-ins
Use these options to manage your third party audio processing plug-ins.
VST/Audio Unit/DirectX plug-ins
These areas show what plug-ins are available for the specified format, which may vary depending on your OS. You can also enable or disable every plug-in for the specified format using the Enable/Disable button.
VST plug-in folders
Lets you add or remove custom VST plug-in folders. RX uses the system VST plug-in folder by default. If your VST plug-ins do not show up, try using this option to add the directory where they are kept.
RX will also scan the first level of subfolders in this folder. If some of your plug-ins do not show up when you scan them, and you know they’re in a subfolder of your plug-in folder, try moving them up one directory level.
Group plug-ins by name in plug-in menus
When enabled, the RX plug-in menu will group plug-ins by common first words, usually the manufacturer’s name.
When disabled, the RX plug-in menu will appear as a single, alphabetically sorted list.
Rescan
If RX detects that a plug-in is unstable, it will blacklist it and prevent it from being opened.
This option allows you to clear RX’s blacklist of unsupported plug-ins and rescan all installed plug-ins in case an RX update or an update from the plug-in manufacturer resolves the issue.
Disclosure: When you buy through our links, we may get a commission at zero cost to you.
I have no idea why it took me so long to write a review on Rx7, Izotope Rx7 solved my worst nightmare: Isolating different elements without accessing multi-tracks or stems, I’ll discuss more on that in a moment.
Izotope Rx7 is a quick and easy tool for fixing audio issues, it also serves as an audio repair tool for movies and Tv shows, which restore damaged noise, clicks, crackers, e.t.c to pristine condition.
This review guide is all about the essential features of Izotope Rx7, the usefulness, and if it really does repair damaged audio issues.
What Does Izotope Rx7 Do Differently?
The reason Rx7 stoodout from the sheer loads of audio tools is the way it uses assistive audio technology, for example, the Repair Assistant can detect noise, clipping, crackle, and it also offers different processing suggestions to choose from.
The Music Rebalance tool that comes with Rx7 identifies bass, vocals, percussion, and other instruments in a mix, and allows for independent gain adjustment of each element.
Izotope Rx7 Feature Breakdown
Rx7 isn’t only a tool but a suite of modules interconnected to work and communicate across your audio session.
Note: Some features are only for advanced edition, make sure you check out the edition you want at the end of this review guide.
Let’s start with…
Oh-Lord! – Repair Assistant
If you have been using Izotope products lately, then you should be aware that Izotope has advanced its machine learning technology. Repair assistant represents the latest advances in Izotope’s assistive audio technology.
Rx7 Repair Assistant intelligently detects common audio problems in selection, for example, it can detect clicks, hum, noise clicking, and much more.
Having done that, it then provides three processing chains tailored to solving the problems detected during analysis. You also have an option to bypass suggestion such as clipping and other issues using the repair assistant preferences.
If no problems are detected, you will see “No Problems Detected” in the dialog, which is fine, if you feel you need a basic cleanup processing, you can use the one’s generated by Repair Assitant during the analysis pass.
Up Next…
Balance the Elements – Music Rebalance
Music Rebalance is my favorite tool in Rx7, it looks skeptical at first. I was amazed of how a tool could be so fantastic when I tried it out, just the perfect tool I have been looking for so many years.
The function of music rebalance is to identify and separate elements in a mix- Bass, Voice, and Percussion using a machine learning algorithm.
That is not all, any element that is not identified as Vocal, Bass, and Percussion would be categorized as other.
Cases Where Music Rebalance Can be Used
Izotope Rx Rf Interference Kit
- Music Rebalance can be useful for rebalancing the gain of a particular mix element when the stems aren’t available.
- It can be used to isolate a single mix element by reducing the level of other elements, e.g in cases where you want to create a remix of a song, and you aren’t provided the stems, in the context of an acapella, you can use music rebalance to reduce the levels of other three elements (Bass, Percussing and others). If all you want is only the instrumental, then you reduce the gain of only the vocal element.
Does it Work In all Case
No!
Some audio files won’t work accordingly, audio tracks are made differently. I would say it works in 90% of the cases.
What else do we have in music rebalance…
Sensitivity Control
Sensitivity can be useful in cases where you want a specific or more element to be narrowly defined. Each element has its own sensitivity knob, let say you want the vocal element to be barely heard, all you need to do is lower the value of the vocal sensitivity and vice versa.
Note: Sensitivity control work in relation to one another, setting all sensitivity controls to something like 6.0 has the same effect as setting all sensitivity controls to a value of 8.0, you get the idea 😉
Coming up next…
Correcting The Contours [Dialogue Contour – Advanced Only]
Rx7 is specifically designed for post-production professionals, one of the ways it solves the demanding needs of post-production pro is remodeling the performance of a line with Dialogue Contour.
Dialogue Contour remodels/correct the intonation of performance, it can also be used for manipulating the pitch envelope of a dialogue selection.
Cases, where a dialogue contour can be useful, is when some words aren’t flowing or don’t fit with the rest of the dialogue in the clip.
This feature comes bundled with Rx7 repair suite only, if you are a music producer (Just like me), who only cares about audio issues in a mix, then you simply do not need this option.
Optimize the Reverb [Dialogue Reverb]
This is tailored to remove unwanted reverb from dialogue clips using advanced machine learning technology.
Dialogue reverb is pretty straight forward:
- You use the learn button to teach the de-reverb tool how much reverb is in your signal
- When the learn operation completes, the reverb profile and tail length control will be set to their suggested values. Feel free to tweak to your desired value.
This tool is designed specifically for post-production professionals and bundled with the Advanced edition.
Other Useful Tools in Izotope Rx7
Variable Time: Useful for correcting timing issues or to adjust the time stretch of a portion of an audio selection without altering its pitch.
Breath Control: Can be used to control the level of breath between words and phrases.
De-click: Clean up vinyl clicks, soften up clicky bass guitars, and more. The new low-latency algorithm enables you to use De-click right within your DAW or NLE without introducing sync issues.
De-clip: Repair digital and analog clipping artifacts to restore distorted audio.
De-hum: Remove ground loop hum and line noise.
De-ess: Tame overly aggressive sibilance. The new Spectral De-ess mode transparently attenuates sibilance with iZotope’s Spectral Shaping technology.
and more…
► System Requirements:
Operating Systems:
- Mac — OS X 10.8.5 Mountain Lion (Pro Tools 10 only), 10.9.5 Mavericks – macOS 10.15 (64-bit only)
- PC — Win 7 – Win 10
Plug-in Formats:
- Standalone Application, Modules: AAX, AU, RTAS, VST, VST3
Supported Hosts:
- Audition CC 2018, Ableton Live 9 – 10, Cubase 9.5, Digital Performer 9, Final Cut Pro X*, FL Studio 12, Logic Pro X, Nuendo 8, Premiere Pro CC 2018, Pro Tools 10 – 12, Reaper 5, Reason 10, Studio One 3 – 4