In such cases, only that I s-limiter which is closest to the fault location is tripped. Figure 5 below shows this application. REFERENCES 1 Dreimann, E.; Grafe, V.; Hartung, K.-H.: “Protective device for limiting short-circuit currents'etz 1 15 (1994) 9, 492-494 2 I s-limiter, ABB AG Calor Emag Mittelspannungsprodukte, 2000. The “Ceiling” control determines the highest level the limiter will put out., and can be used to attenuate or boost the the output of the limiter. One more control commonly found on limiters is “Release”. This allows the user to adjust how fast the limiter will return stop attenuating the signal once it falls below the threshold.
Can a $20 plugin hang with one costing ten times more?
I spent several hours over a few days comparing the Universal Audio Precision Limiter to the ToneBoosters Barricade Limiter, which I already own. The results were both surprising and, really, not that surprising.Both plugs perform the same basic task: clean brick wall limiting on busses and especially the stereo mix bus.
The UAD PL works and sounds good. No real complaints from me except that UA wants $200 for it.
Auto release works well and the sound is pretty transparent without pumping and with a nice compliment of metering options.
And, of course, the great thing about the UAD limiter is that I can load it into Console, which I cannot do with the TB product.
I often use the Barricade limiter from ToneBoosters (we used to know TB as the highly regarded Jeroen Breebaart suite of plugins). I've known for years that Breebaart plugins are not only good for the money but overall excellent effects. Check out his CV -- this guy knows what he's doing.
Anyway, though I was perfectly happy with the TB limiter I'm always looking for something different -- you never know, you know?
I was somewhat surprised to find that the TB limiter performed noticeably better than the UA offering. The sound was smoother and cleaner -- quite a bit, actually. And, ironically, the Barricade offers a lot more precision over the controls.
The only downer is that I cannot load the TB plug into Console which would be handy from time to time. However, strapped to the stereo bus, the ToneBooster limiter is a clear winner in the sound and control department. I'd give ease of operation to the UAD, perhaps, for the auto release and attack functions for people who might not know where to start with attack and release settings.
DMG Limitless ($199 MSRP) is a modern mastering limiter plug-in for PCs and Macs that offers precision dynamic control using two closely integrated limiters. One limiter is specially configured to work only on transients, while the dynamics limiter uses look-ahead and a more conventional release time to control dynamics musically. Limitless produces loudness enhancement to any desired stylistic effect—from transparent to very colorful—based on built-in preset Style algorithms. Styles are Aggressive, Punchy, Warm, Smooth, Tight and Transparent.
For the mastering engineer, Limitless is a smart “complexity inverter”; it uses numerical solvers on a sample-by-sample basis to work out the best possible limiting action for producing loudness to a specified targeted output level without clipping and without adding artifacts. As the excellently written manual states for basic workflow: “Reduce Threshold until track reaches desired loudness. Enjoy!” I liked that Limitless works straightaway like any full-bandwidth limiter—important for quickly dealing with problems.
Digging Deeper
Limitless (Version 1.03 tested) is a multiband processor that uses six Band Strips with linear phase filters, each with adjustable frequency centers, band gain faders, mute/solo buttons, and individual release time settings. There are nine additional Advanced controls, a 64x oversampled pre-limiter Clipper section with a choice between three different clip algorithms, plus a Dither dropdown menu with noise-shaping/bit-depth preferences.
To monitor everything, Limitless has several information-rich, resizable screens with four resident Master controls: Threshold, Ceiling (or maximum output), and Release time that groups the release times for all six Band Strips together.
Uad Precision Limiter
There are zoomable PPM and GR meters and fully integrated EBU R-128 Loudness metering with both True Peak and LRA measurement; you can switch between gated (LUFS) and un-gated (LKFS) measurement. A resettable separate History screen with an adjustable time scale shows a Short-Term loudness line with LRA (Loudness variance) displayed around it in gray.
Limitless Mastering
My first Limitless mastering project was a Wall Street protest song. The producers used no real instruments—just synths, samples, loops and shouting vocals. He wanted it clean–sounding and louder than loud for downloading and streaming; they complained they were unable to match the loudness of other Electronica/EDM tracks.
My workflow in Pro Tools | HDX started with copying the Aggressive style to Manual—you can also step through any Style, or any of the included presets from the Preset tray. There is a lot to learn about Limitless processing parameters from these descriptively named presets.
I used two screens—Frequency and Time Graphs—to monitor and set up Limitless. Sculpting the sound is made visual using the Frequency Graph screen with its spectrum analyzer overlaid with six multiband crossover nodes. You can delete nodes, change their frequency centers, audition (solo and mute), and set their contribution to the finished sound. While in Manual mode, each band’s release time is adjustable.
For this song, after I dialed-in and centered the six frequency nodes, I shortened the Release time for the upper bands and lengthened it for the lower frequency bands. I found the adjustable release timing for each band crucial for obtaining loudness with transparency and minimal collateral damage.
Traveling across the GUI from left to right, it continuously redraws Limitless’ current activity. When synched to the song’s timeline, it’s easy to see where each and every peak and resultant gain reduction happens, plus understand the Release time curve shapes visually. You can set up beat-synched redraw in Preferences in the Setup window.
In Manual mode, the Advanced parameters are freely adjustable at any time, but I didn’t touch Input Trim, Slope (adjusts the slope in dB/Oct of the crossovers) or Separation.
Separation at 100 percent (the default setting, but ranges from 0 percent to 200 percent) is the most transparent-sounding, with each of the six bands acting independently. At 200 percent, the band that needs to change the most will change more, causing the other bands to change less. I found using Separation an acquired skill; it was the last adjustment in the quest for the best sound. I did put Stereo Link at 0 percent for wider stereo imaging, with the caveat that no loud mix elements are panned hard left or right.
Look-ahead was set to 0.25 ms (ranges up to 10 ms), but I reduced it to 0.15 ms for a more aggressive sound. This Style had the Dynamics control at 35 percent (50 percent is the default), so the transient limiter was working harder to produce loudness compared to the dynamic limiter. Here I used two different Dynamics settings and automated switching between them: 30 percent for choruses and 60 percent for verses. At 60 percent, the second limiter, with its slower release time, caused the verses (only) to sound smoother.
The Knee parameter is applied before the first limiter, and either narrows (hardens) or broadens (softens) the range around the exact threshold setting. It was set to 0 dB—i.e., hard limiting. I also switched on ISP so that Limitless prevents Inter-sample Peak Distortion and it works well; I never had any “reds” onscreen or on my interface metering.
I pulled Threshold down to -9.1 dB and set the Release time to 97.62 ms. Ceiling went to -0.8 dB, and that worked out well to produce a single, compatible audio file ready for both CDs and downstream for codecs such as Apple’s Mastered For iTunes. I had Pop music loudness and density while maintaining the song’s dynamics.
Louder Than Loud
Uad Precision Maximizer Vs Limiter
But the producers wanted it louder! A particular mastering engineer style uses a clipper to add gain and clip the signal before the limiter. Limitless’ Clipper has three algorithm choices: Swell and Swell2 both add third-order harmonic distortion, and the Knee algorithm varies from hard clip (ADC clipping) to soft clip.
I tried Swell2 and put the Drive control up to 7.7 dB and set the amount, a mix between the clipped signal and input, to 50 percent. Oversample was at 16x. I also changed the Weighting control to 124 percent (100 percent is the default) to encourage Limitless to limit the low frequencies more with this bass heavy music.
Options, Options, Options!
Limitless is a complete and very powerful mastering toolkit; it works as transparently as you like, or not! In the past for in-the-box mastering, I always fussed over getting what I wanted using a compressor followed by a limiter. Now as my new, singular mix bus processor, I found Limitless’ sound and operation wonderful and worthy of “mastering” its immense capabilities and options. You can have your mixes loud yet retain musicality and high-quality sound with minimal downside. Awesome!
Barry Rudolph is an L.A.-based recording engineer/educator.
Try This
Limitless drum bus processing is fast and colorful if desired. I used the “Tighter Bass, Everything Else Louder” preset across a stereo drum bus including the kick mic tracks. I set the Release Shape to 100 percent—that’s a Log release time curve, as it seems to keep the drums lively sounding versus the inverse log release at 0 percent. This setup made for a louder, more compact and super-solid drum track for a pop-rock song.
PRODUCT SUMMARY
Company: DMG Audio
Website:dmgaudio.com/limitless
Product: Limitless Master Limiter Plug-In (V. 1.03)
Uad Precision Limiter Review
Price: $199 MSRP Yolanda adams i m going to be ready.
Pros: A complex problem-solver with a refined interface.
Cons: Mastering the learning curve a must for optimal operation