Use three bands of iZotope's gating signal processing to get the utmost control over removing problematic bleed or ambience from your tracks. Automatically find and set optimal cross-over points in the Gate's multiband view with Crossover Learn. Use the Hold function to set how long the Gate stays open after the signal falls below the threshold. RX 6 offers powerful new features and an enhanced workflow built to meet the needs of professional engineers in music, post-production and broadcast. With this release, we have addressed some of the most pressing problems encountered by our veteran users. Welcome to the most dynamic edition of RX to date!

Feb 09, 2015 RX 4’s visual editing tools make it easy to identify and remove unwanted sounds captured during the recording process. Download your free, 10-day trial: http.

Sound Quality
Ease of use
Features
Bang for buck
Overall:

Software: RX 5 Advanced Audio Editor
Developer: iZotope
Formats: Standalone application, VST, AU and AAX plug-ins for Mac and Windows.
Price: Standard Version $349 - Advanced Version $1199 (US Dollars - MSRP)
Demo: Fully functional for 14 days
DRM: iLok (USB dongle not required)
Website: https://www.izotope.com/en/products/audio-repair/rx/

Preamble
Having a set of audio repair tools is definitely one very desirable in most studios and on some they are just mandatory - any serious post-production facilities and mixing or mastering studios are bound to deal with damaged audio at some point. With that in mind, the question is: which one to choose? Fortunately for us this segment shows a busy yet not crowded marketplace, with a handful of great sounding and very capable solutions competing for attention but far from the over-saturated equalizer and dynamics segments. Having said that, the fact that not many developers put their efforts on making audio repair tools can be attributed to some extent to iZotope RX’s existence. Released back in 2008, RX simply took over. With an effective and powerful set of tools of the highest quality and a straightforward editor, iZotope pretty much dominated the market and although there are still some good competition out there, it’s safe to say that RX became a reference. We’ll go through it’s fifth iteration to see how far it goes in 2015 and if it manages to keep its crown. I’ll try to break down the editor’s major features, then do a brief run on the modules to wrap it all up in the end with scores.
The RX Audio Editor
RX’s audio editor features a clean layout with a very nice waveform and spectrogram display that can be customized to blend both visualization modes, offering a great deal of information about the amplitude and frequency of the audio material in place. The editor also features a clip-gain line, which provides very easy gain adjustment of the audio before it hits the modules. Right-section of the interface houses the modules - which I’ll go through in a moment and visualization options for frequency and amplitude. Lower section provides scrolling, further visualization and zoom controls, and the tools you need to select amplitude, frequency or time of the material and also a instant-process button that applies de-click, attenuate, fade, gain or spectral repair (replace) based upon common-use presets. This greatly speeds up the workflow and helps a lot if you’re dealing with lengthy material that needs a ton of small adjustments. Used in conjunction with the lasso tool it greatly straights up the process, allowing for quick repairs on the highlighted frequency, amplitude and time regions. Selection a region and right-clicking on the selection also brings up useful operations such as capturing the required frequency and amplitude information to feed specific modules that are based on frequency/amplitude “learning” functions such as EQ and Ambience match and De-noise. RX can also do audio recording with monitoring, which is good when doing restoration and archiving work since you can capture the material and keep everything within RX right from the very beginning. RX also comes with WAV, AIFF, FLAC, OGG import/export codecs so all bases (minus Apple codecs) are pretty much covered.
The RX modules and the Module Chain
Before I go through each module, I’d light to highlight one of the coolest RX features, the Module Chain, which lets the use combine multiple RX modules, providing a quick way to process audio with module-combos that you already know will work. I should mention that that the De-clip, De-click, De-crackle, De-hum, De-noise, De-Reverb and Dialogue De-noise modules are also offered as standalone as standalone plugins for your DAW, albeit at the cost of considerable latency and CPU resources on most cases. Nevertheless, it’s a welcome alternative to using the editor when you really need to deal with something live and/or with varying settings.

De-clip: RX’s tool to deal with distortion problems is absurdly good and does some miracles on even the hottest and most clipped recordings you can come across. The layout is very intuitive and hard to get wrong, with some visual aid on the material’s amplitude, so it’s just a matter of setting the clipping level you want to address with the threshold slider and be amazed by the results! De-clip also features an optional make-up gain control and a peak limiter to keep things safe. Arguably one of the useful tools in RX’s arsenal and one that will likely get a lot of use when your sources are less than ideal, De-clip is a life saver. I found that applying it multiple times instead of going for a huge hit leads to better results and I couldn’t believe most things I was doing! Please ponderate my excitement a little bit and keep things in context within reason - this module will not save badly clipped mixes on a mastering situation, although it can definitely make them a lot more bearable and workable.
De-click: Another miracle-maker, the De-click module can do a hell lot more than just plain click-removal. Along with the De-plosive module this is one of the best tools to deal with problematic sounds from syllables with “Ps” and “Bs” - just set the click type to “thump” and make things right! When used for it's meant purposes, it is simply the best solution I’ve found to this day to deal with a lot of flexible options to deal with all sorts of clicks, crackles, thumps and all sorts of short-bursts of crappiness that might’ve plagued a recording. I got very effect results using the frequency skew to nudge it towards low or high frequency attenuations and with the click widening options, which set operating length in milliseconds for the processing. It’s so effect that it’s scary, and it manages to remove the undesired and only the undesired, leaving the rest of the content rather untouched. A real lifesaver that could very well be a plugin on its own without any fear of the competition.
De-hum: A set of notch and high-pass filters for cutting out electrical noise. The notch filters can act as cut-only parametric bands and the high-pass filter also features a variable slope, so in that regard De-hum can serve as general purpose and simple to use equalizer with all the quality one expects from iZotope.
De-noise/Dialog De-noise: Another one that could definitely be a plugin on its own and it would be a very competitive entry in the noise-reduction segment. Extremely effective and versatile, coming in two operating modes: a broadband mode with the entire frequency spectrum and dialog/speech mode that is optimized for the frequency range of a human voice - this last mode also reveals itself as an excellent tool for removing or attenuating hiss from any kind recording, not only dialog. In that regard, I’ve found myself using Dialog De-noise a whole lot more since most of my noise problems occurred in the top end and on few occasions I had to resort to the full-spectrum mode.
De-plosive (advanced only): This is a tool catered to the removal of the sounds associated with the excessive air coming from the Ps, Bs, Ts, Ks of the human voice that hur

Izotope Rx Repair Assistant Greyed Out