Overview
iZotope RX 12 is the ultimate toolbox for audio post-production. RX provides the industry standards for audio repair, restoration, and enhancements. Focus on eliminating complex audio issues or use them for unique problem solving for your mix. Either as a stand-alone program or through separate plugins, RX is the best tool for any post-production needs. Considered an Industry Standard for some, RX Audio Editor can help with your Audio Repair, Restoration, Enhancement. Comes as a standalone application or can be used within Pro Tools, Logic Pro, Ableton Live, Premiere Pro, DaVinci Resolve, etc.
RX 12 comes in three editions: Elements, Standard, and Advanced. Tools marked (Advanced) below are only included in RX 12 Advanced.
What's New in RX 12
- Scene Rebalance (Advanced) - Separate a finished film/TV mix into Dialogue, Music, and Effects and adjust each one on its own (Great when you don't have the stems)
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Stems View - Split your audio into stems (using Scene Rebalance, Music Rebalance, or Dialogue Isolate) and use any RX tool on just one stem. Export as separate stems or one file when done.
- Trim Silence (Advanced) - Automatically find and delete silent gaps in long files (Great for interviews and audiobooks)
- Rebuilt De-bleed and Breath Control - Now powered by machine learning for more accurate results
- New Real-Time Plugins - Music Rebalance and De-bleed can now be used live in your DAW
- Improved Dialogue Isolate, Music Rebalance, and Repair Assistant - Updated AI for cleaner results with fewer artifacts
- Interface Updates - Larger spectrogram, a module search bar, and a resizable History panel
Tools that are Separate Plugins
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De-Clip - Repair clipping artifacts (Great for Live Shows or interviews)
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De-Click - Automatically find and remove clicks, pops, and digital impulse noises (Great for old transfers or cell phone interference)
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De-Reverb - Control or remove the ambient space in a recording (Can analyze the audio to help adjust better). Salvage recordings of dialogue containing too much reverb/acoustic space without needing to spend time/money on a re-shoot or ADR.
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De-Crackle - Eliminate crackles and clicks that occasionally pop in. Remove audio crackling on vinyl recordings and treat problems like dry-mouthed spoken word
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De-Ess - Help reduce or eliminate the sibilance, the harsh high-frequency sounds that come from S, F, X, SH, and a soft C.
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De-Plosive - Identify, Separate and Reduce plosive input signals that usually come from harsh vocal audio files. Improve the quality of your dialogue by getting rid of plosive pops and mic bumps that can occur during a recording.
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De-Hum - Remove tonal noise that appears in the background (Electricity hums, AC, etc.) Removes any amount of hum, wireless ring, or interference, without artifacts or affecting the audio quality. In one pass, eliminate radio and transmitter interference, camera and generator hum, and more.
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Voice De-Noise - Restore problematic vocal or production recordings in real time. Analyze speech signals and determine the noise threshold for a cleaner vocal track. It has an adaptive mode that can adjust to a changing noise floor in real time, making it ideal for dialogue stem set-and-forget de-noising.
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Spectral De-Noise - Remove stationary or slow changing tonal noise and hiss, helping for noise reduction. Has an Adaptive Mode that follows a changing noise floor automatically.
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Breath Control - Detect breaths in vocal recordings and suppress them by either automation to lower or cut off the breaths (Rebuilt with machine learning in RX 12)
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Mouth De-Click - Detect and reduce mouth noises like clicks and lip smacks (Great for voiceover and podcasts)
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Guitar De-Noise - Remove amp hum, finger squeaks on strings, and overly plucky picking from guitar recordings
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Repair Assistant - AI detects common audio problems and develops a process chain tailored to your audio file. Detect noise, clipping, clicks, and more. Pick your material type (Voice, Instruments, Percussion, Sound Effects) and choose Light, Medium, or Aggressive suggestions.
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Dialogue Isolate - Separate Spoken Dialogue from background noise (Crowds, Traffic, Footsteps, etc.) Helps increase the main dialogue's presence. Also includes the Dialogue De-Reverb controls from RX 7, so it can clean up unwanted reverb from dialogue too. Works in real time or offline.
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Music Rebalance - Identify and separate elements from a Music Mix. (Vocal, Bass, Percussion, Other) Adjust the mix elements separately. Use to capture isolated vocals from a performance or remove one to just capture the instrumentals. (New real-time plugin in RX 12)
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De-bleed - Reduce the leakage of a signal into another (Headphone Bleeds, Guitar bleeds in vocal take, etc.) Rebuilt in RX 12: Classic mode learns the bleed from a reference track, while the new machine learning mode can remove bleed without a reference track. (New real-time plugin in RX 12)
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Spectral Editor - Open the RX spectrogram right inside your DAW to paint out unwanted sounds (Only works in supported DAWs, such as Logic Pro and Studio One)
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Ambience Match (Advanced) - Match the noise floor/ambience of one recording and have it recreated for another (Help match dialogue to fit together for a scene). Pro Tools AudioSuite only.
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De-Rustle (Advanced) - Reduce the Noise (Rustle) that may come from Microphones rubbing or brushing against clothes or other things. Pro Tools AudioSuite only.
- Scene Rebalance (Advanced) - Separate a mixed scene into Dialogue, Music, and Effects and adjust each one. Pro Tools AudioSuite only.
Stand-Alone Application Features
Along with the Separate plugins that come with RX 12, the stand-alone program has extra features available only in the RX 12 Advanced application, not the Pro Tools plug-in.
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Center Extract (Advanced) - Preserve or remove the center channel of a stereo file.
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De-Wind (Advanced) - Remove low-frequency rumbling that can come from moments of windburst (Meant for Light to Moderate Burst, NOT FOR HEAVY WINDS)
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Deconstruct (Advanced) - Analyze audio selection and separate the signal into Tonal, Noise, or Transient audio. Separate components of the signal can then be cut or boosted individually using their associated Gain control.
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Dialogue Contour (Advanced) - Reshape the intonation of dialogue to rescue or improve a performance in post production. Manipulation of the pitch envelope of dialogue. Pitch corrects the speech to sound like one, making sure the inflection of words flows with the rest. (Fantastic for fixing up Interviews)
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Interpolate - Repairs Individual clicks from the file
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Spectral Recovery (Advanced) - Restore the high frequencies that get lost when audio is compressed for video calls and streaming. Turns grainy, muffled recordings into clearer speech (Great for Zoom interviews and remote podcasts)
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Spectral Repair - Remove undesired sounds from natural sounds. Resynthesize the audio while taking into consideration tonal harmonics, nonlinear pitch changes like vibrato, background noise characteristics, and transient events. With the power of these tools, you can remove or attenuate unwanted, interfering sounds from barking dogs and breath noises to string squeaks, fret noise, and missed/wrong notes.
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Trim Silence (Advanced) - Automatically detect and delete gaps of silence in long audio files. Just set the threshold and let it do the rest. (New in RX 12)
- Wow & Flutter (Advanced) - Fix pitch wobble caused by old tape machines or record players spinning at an uneven speed
Utility
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Azimuth (Advanced) - Control Left and Right Channel Gain and Delay (Help fix Stereo imbalance). Repair stereo imbalances and phase issues.
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Dither - Convert High bit resolution to lower. Tame the quantization distortion that happens when converting between bit depths due to re-quantization.
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EQ - Six-band parametric EQ for quick fixes like rolling off low rumble or cutting harsh highs (A good first step before repair)
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EQ Match (Advanced) - Match the EQ profile of a selected file to another. Helps match differences between files. This is useful if you're ever tasked with matching a lav mic with a boom mic, matching location dialogue to ADR or vice versa. [image: RX 12 EQ Match module interface]
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Fade - Gradually increase or decrease gain throughout the selection [image: RX 12 Fade module interface]
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Gain - Adjust the volume [image: RX 12 Gain module interface]
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Leveler (Advanced) - Level the volume of your dialogue with consistency while keeping the breaths and sibilance lower. Automatically rides the gain of the file to even out the variations of the signal's gain level. You can set the desired audio target, and the program will try to adjust for it [image: RX 12 Leveler module interface]
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Loudness Control - Adjust the gain of the signal in order to meet the loudness standard you set. Load presets for broadcast standards and monitor your levels with built-in meters. [image: RX 12 Loudness Control module interface]
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Loudness Optimize - Help music sound as loud as possible on streaming platforms after their volume normalization is applied [image: RX 12 Loudness Optimize module interface]
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Normalize - Apply enough gain to bring the peak level to the target you set [image: RX 12 Normalize module interface]
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Resample - Convert an audio file's sample rate to another. (96 kHz to 48 kHz / 192 kHz to 44.1 kHz) [image: RX 12 Resample module interface]
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Signal Generator - Synthesizes silence, tones, and noise (helpful for test tones, calibration, repairs). Capable of generating extremely accurate test tones for research and testing purposes. [image: RX 12 Signal Generator module interface]
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Streaming Preview - Hear how your track will sound on streaming platforms like Spotify or Apple Music before you release it [image: RX 12 Streaming Preview module interface]
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Time & Pitch - Change the length and the pitch of audio independently (Helpful for fitting audio to a new tempo or timecode) [image: RX 12 Time & Pitch module interface]
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Variable Pitch - Fix small pitch variations or drifts over time. Adjust the pitch of both musical and non-musical audio selections while preserving their time and length. It can be used to change the pitch on the bend of a guitar string, re-shape the sound of a mono instrument, for creative effects on singers, or for sound design. [image: RX 12 Variable Pitch module interface]
- Variable Time - Adjust the time stretch amount of an audio selection without altering its pitch. Correct timing issues or creatively adjust the file's speed. High-quality time compression and expansion. [image: RX 12 Variable Time module interface]
For more details on functionality, visit the RX 12 User Manual.