Izotope Rx Time And Pitch
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Mighty RX, a complete suite for audio repair, has just been updated to version 7, with additions, enhancements, and much more. This huge, complex, precise suite just got bigger.
by Vincenzo Bellanova, Nov. 2018
An Incredible Suite
Beyond that, the Unmask feature digs buried vocals out of a mix, placing them front and center. You also get Melodyne 4 essential, which offers powerful, transparent pitch and time correction, and iZotope RX 7 Breath Control, which automatically suppresses breaths in dialog or vocal recordings. The RX 7 Standard audio editor includes Composite View, which allows you to bring in up to 16 individual audio tracks and edit them as if they were one, easily addressing audio issues that appear across multiple microphones. Variable Time Standard & Advanced Only Adjust the time stretch amount of an audio selection without altering its pitch. 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. RX 7 Standard introduces new features and workflows that allow you to easily edit, repair, and restore audio to pristine condition both in post and music production. 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. RX 7 Standard introduces new features and workflows that allow you to easily edit, repair, and restore audio to pristine condition both in post and music production.
The renowned RX suite just got a major update, with several new improvements and additions. iZotope RX7 is an absolute essential suite, no matter if you’re working on music, field recording, sound design or audio post production, it can save not only a lot of time (avoiding re-recording), but it can literally fix problems transparently in most cases. Noise, mouth clicks, lavalier rustle, hum, wind rumbles, digital clicks, crackles, plosives and breaths, as well as less exoteric operations like levelling, normalizing, resampling, and this on one or more files, on the whole audio file or just in a time or frequency selection. The scenarios in which RX can operate are countless, but what is important to note is that we have everything in the same workspace if we’re focusing on repair, or we can open single plugins in our DAW for fast fixes. RX7 plugins are now available as AudioSuite plugins too, and the family just got bigger, as we will see.
A great number of videos, and the new Repair Assistant, will make corrections even easier, showing you the essential techniques, problems and how to fix them. The different versions of RX also offer flexibility in terms of needs, price and use. RX is getting closer and closer to musicians, and the new Music Rebalance module is a demonstration of the attention iZotope pays to the different targets.
In this review we will focus only on the new elements, but if you’re new to the RX world, you might be interested in reading more about what is RX and its amazing modules in the two previous reviews on the Soundbytes Magazine website.
RX 5: https://soundbytesmag.net/rx5-by-izotope/ How to make a drop in garageband ipad.
RX 6 Advanced: https://soundbytesmag.net/review-rx6-advanced-from-izotope/
What’s New
As anticipated, the list is not short, starting from a light UI refinement, to multichannel support and, of course, entire new modules.
Pro Tools users now can enjoy Dialogue Isolate, De-rustle, Breath Control and the new Music Rebalance modules as AudioSuite plugins. AudioSuite is a Pro Tools format of audio plugins which can be used on a single audio clip or on multiple clips at once instead of on an insert track. The processing through AudioSuite plugins needs to render the processed files, replacing the clips we treated with new ones.
Multichannel is now supported up to 7.1.2 (10 channels) Dolby Atmos, meaning that you can process one or all the channels with the same module and in just one instance. Such a powerful new feature that will further speed up the work of audio engineers working on films or where multichannel audio is required.
Dialogue Isolate and De-Rustle modules’ performance has been enhanced, starting from the new Preview function for checking their operations on the go.
Another important new feature is the possibility to select a frequency range of action for the modules directly in the Module Chain. This truly gives extra power to the Module Chain, allowing to arrange even more specific corrections per single module.
New Modules
Let’s start from the new Dialogue Contour module, which is designed to shape and modify the pitch and inflexion of dialogue parts. Intonation and inflexion are obviously fundamental (not to mention that in some languages they have a distinctive function, and can alter the entire meaning of a word). In some languages, like Italian, for instance, intonation might distinguish an affirmative sentence from an interrogative sentence, because the position of the terms is the same in both cases. Linguistics apart, perfecting inflection before could involve micro pitch shifting or formant shifting using automation or external tools. Now we are just a few clicks away from our goal. Insert the module, isolate a section or the entire file and create your custom curve by adding, moving or deleting individual points, and smoothen the final result. Formant scaling is also available in order to shift specific resonances or attenuations in the spectrum, respecting the natural formants of the human speech.
Dialogue De-Reverb is the new module specifically designed for removing reverb from voice. RX also has a De-Reverb module, but the new one does not require to learn the reverb profile, and it is based on machine learning algorithms. Particularly useful both in audio post, if we don’t have the chance to get our interview in a proper room, or in music production, if we need to record vocals in a reverberant environment. Its controls include Sensitivity and Ambient Preservation in order to balance the result and to identify how much of the incoming signal can be considered as reverb.
Variable Time and Variable Pitch allow the user to select a portion of the audio file and design a custom shape for pitch or time variations in the same way we described for the Dialogue Contour module. What deserves attention here, is the incredible, crystalline audio quality of these tools. Not to mention that these can absolutely wink an eye to Sound Design. I tested Variable Pitch on an entire song, with both time changes and Preserve Time enabled (with the first, the module will behave like a Tape play head changing pitch and speed of the file), and I barely heard artifacts, even with generous pitch variations. Here, too, possible applications are countless, from extreme pitch shifting on raw sound sources to morph them into bizarre effects, or gentle shifts with time changes which reminded me of the old days of sampling material for musical purposes. Pitch Coherence and Transient Sensitivity controls appear on both the modules, allowing for timbre and transient preservation.
Last but not least, the Music Rebalance module, which created a quite a stir when first announced. People are probably asking if it’s true that it can remove vocals from a song or an instrumental leaving just vocals. The answer is yes. Simply divided in Voice, Bass, Percussion and Other, Music Rebalance allows us to set the Sensitivity of the analysis, letting know the module how much of the incoming signal should be considered as Bass, Vocal, etc., and we can set the gain for each of the parts. Low Sensitivity values can reach precise results by completely muting tiny parts of other instruments that might come in the analysis, but at the cost of small artifacts, while if we are after complete clarity, higher values can eliminate glitches, but other instruments might end up in the result. Sometimes reverb can be an enemy of Music Rebalance, probably because of the long tails which can be confused with the voice or the behavior of other instruments. But despite some artifacts, Music Rebalance works very well and it is capable of extracting a cappella voices from an entire song which is more than useable.
Apart from the vocal extraction, Music Rebalance’s main role, I think, resides in other uses, like an intelligent way to give space to various sections, moving entire instruments inside or outside the mix. Or it can completely reshape a song with problems, and in this, Music Rebalance excels, especially for the idea of changing the balance of a track with just a few and intuitive parameters. When everything seems lost, and we probably are in front of a single WAV file, without the possibility of touching any fader in the DAW, it can save the day.
Repair Assistant
Probably the most interesting addition to the whole Suite, Repair Assistant can intelligently analyze an audio file, identify problems and suggest corrections. In the top right of the RX7 standalone interface, just click on the Repair Assistant tab to engage this tool. It is absolutely wonderful to have a personal assistant which will analyze and possibly speed up even more the work. Repair assistant will ask if the file contains musical, dialogue or other material, then starts the analysis searching for clipping, clicks, hum and noise. In the settings, we can also customize its analysis bypassing one of the problems, for instance, we can exclude the hum analysis.
Clever, fast and powerful, Repair Assistant is another magical element in RX that will make the entire suite even easier and quicker to use, and I personally love how smart plugins are becoming lately. Surely, this won’t mean that the human touch is completely bypassed, and the ability to identify problems, solve them, tweak the modules, is still required, but Repair Assistant can work as a huge “learn” function on the entire audio file, allowing us to complete a task in a matter of clicks.
There’s more, and this is another great proof of flexibility: if problems are found, Repair Assistant will purpose three different solutions, each of them containing a different module chain, so different modules arranged in various ways. Below the various solutions, labelled as A, B and C, if we click on the faders icon, we can set the intensity of the corrections, which is like controlling the overall Dry/Wet of the modules, or, if we aren’t satisfied and we want to use the Repair Assistant’s suggestions as a starting point, we can open the module chains and tweak the single module’s parameters to taste.
Conclusion
RX7 confirms itself as a must have tool of incredible value, for its vast array of modules, precision, clarity and true gems like the possibility to arrange, save and recall entire chains. Absolutely suggested for everyone who is looking for saving, preserving or “only” asking more for their files. Pro Tools users can now enjoy more AudioSuite tools, and engineers working on multichannel files can be enthusiast too. Having a look around, lately the word Ambisonics is popping out more and more, this is the direction I really hope the next RX will take.
Since my latest review of RX (version 6), I must confess I have used the suite almost daily on both musical and sound design jobs, easily rescuing a lot of files, and rarely opening the manual again because of intuitive functions of this software. Now, with the Repair Assistant, these operations will be even quicker.
The new modules and improvements add some shine to the whole tool, especially Music Rebalance, getting even closer to musicians. I think it will be perfected, analyzing and isolating the various parts even better in the future. Separating single instruments from a track wasn’t something I was thinking about very often before seeing this module. I can just guess what will come next. Variable Pitch and Time, let’s say it again, are tools that easily adapt to musical and Sound Design applications, with a really impressive quality.
iZotope RX7 is available in different versions: RX Elements ($129.00 USD), RX7 Standard ($299.00 USD), RX7 Advanced ($1199.00 USD) and it is also included in the Post Production Suite 3 ($1499.00 USD), bundled with Insight 2, Neutron Advanced 2 and Tonal Balance Control. RX7 Advanced is available for both Mac and PC platform, 32 and 64 bits, in AAX (64-bit), Audiosuite DPM, Audio Unit (32-bit and 64-bit), RTAS (32-bit), VST 2 (32-bit and 64-bit), and VST 3 (32-bit and 64-bit) format.
Supported plugin hosts: Audition CC 2017, Cubase 9, Final Cut Pro 10, Live 9, Logic Pro X, Media Composer 8.8, Nuendo 7, Premiere Pro CC 2017, Pro Tools 10-12, Studio One 3.
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iZotope Radius is iZotope's offline time-stretching and pitch-shifting algorithm, designed for completely transparent operation on a wide variety of source material. Radius brings world class time-stretching and pitch-shifting to the selection based RX restoration platform, creating a powerful array of tools and algorithms for repairing audio.
Mode
Radius features two modes of operation, designed for completely transparent operation on a wide variety of source material.
Mix - Designed to work well with polyphonic material such as mixes with more than one instrument, as well as non-harmonic material such as drum loops or rhythmic audio.
Solo - Designed for monophonic pitched material such as a stringed instrument or human voice.
Quality (Mix mode only)- Controls the algorithm's processing quality
Izotope Rx Time And Pitch Video
Stretch Ratio - Determines how much the resulting audio will be stretched in time. Values from %0-100 will cause the audio to speed up without affecting pitch, resulting in a shorter audio file. Values %100-800 will cause the audio to slow down without affecting pitch, giving you a longer audio file.
Pitch Shift - Controls the amount of pitch shifting up or down that will be performed to the audio.
Extended Parameters ('More')
Transient Sensitivity - determines the algorithms handling of transient material. Higher values will result in better preservation of individual transients after processing.
Adaptive Window Size (ms -Solo mode only) - adjusts the window size in milliseconds of radius' solo algorithm. If the adaptive window size is too small, you will hear a squeaking noise which sounds like the pitch of the audio is changing very rapidly. If the adaptive window size is too large then the sound will become grainy as you will begin to hear portions of it being repeated.
Pitch Coherence - controls the preservation of the natural timbre of the processed audio
Phase Coherence - preserves the phase coherence of the processed audio. High values will avoid phasiness in Radius's output at the expense of roughness (modulation) in processed polyphonic recordings.
Noise Generation - Helps to improve upon noisy material that can sound unnatural when processed. This control will generate noise instead of stretching the noise which is already present in the signal signal. Higher values of the noise generation parameter will cause Radius to generate noise more often at the expense of phase coherence.
Izotope Rx Time And Pitch 2
Shift Formants - Causes radius to also shift the formants of the selected audio with the controls below when processing. Formant frequencies do not change when the pitch of the voice or instrument changes. When Radius performs pitch-shifting without Formant Correction, it will shift these resonant frequencies along with the rest of the audio. This can lead to an unnatural change in the way the audio is perceived.
Strength - Adjusts the strength of the formant correction
Shift - allows you to specify how much formant frequencies are shifted. Typically this control can be set to 0.0, which leaves the formant frequencies unshifted. Adjust this control to fine-tune the formant correction algorithm or for special effects.
Width - fine tunes the way that Radius detects formant frequencies. Smaller values of this control will offer more precise formant correction in the processed audio.